Commit 1188bdbe authored by François Févotte's avatar François Févotte

Ex 03-3: première version (sujet 1)

parent e4c58017
# This file is machine-generated - editing it directly is not advised
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2020-04-10
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---
title : Analyse de la concentration de CO2 dans l'atmosphère depuis 1958
author : François Févotte
date: avril 2020
---
# Gestion des dépendances
## Environnement
```julia; echo=false; results="hidden"
@info "Instantiating project"
```
Nous utilisons Julia dans sa version 1.4.0, sur une architecture matérielle de
type x86 (64 bits)
```julia
using InteractiveUtils
versioninfo()
```
Il nous faut maintenant charger l'environnement logiciel de notre étude, c'est à
dire toutes les bibliothèques sur lesquelles elle s'appuie, dans les bonnes
versions. La liste des dépendances directes est contenue dans le fichier
`Project.toml`, et complétée par le fichier `Manifest.toml` (qui liste toutes
les dépendances directes et indirectes, accompagnées de leurs numéros de version
précis).
Toutes ces informations permettent au gestionnaire de paquets de re-créer un
environnement logiciel identique à celui qui a été utilisé pour développer cette
analyse.
```julia
using Pkg
Pkg.activate(@__DIR__)
Pkg.instantiate()
```
## Chargement des dépendances
```julia; echo=false; results="hidden"
@info "Loading dependencies"
```
Tant que nous y sommes, profitons en pour charger dès maintenant les paquets
dont nous aurons besoin.
```julia
import HTTP
import CSV
import DataInterpolations; const DI=DataInterpolations
using GLM
using Printf
using Dates
using DataFrames
using Statistics
using Plots; gr()
```
# Données d'entrée
Nos données d'entrée proviennent du programme [Scripps
CO2](https://scrippsco2.ucsd.edu/data/atmospheric_co2/primary_mlo_co2_record.html). Nous
fondons l'analyse sur le jeu de données contenant des observations hebdomadaires.
## Téléchargement
```julia; echo=false; results="hidden"
@info "Retrieving data"
```
Le jeu de données est téléchargé une seule fois ; c'est une copie locale qui
sert à réaliser l'analyse. Ceci permet de garantir la version des données
utilisées pour l'analyse, et stockée dans git aux côtés du présent document.
Il est possible de forcer le téléchargement en positionnant la variable
`force_download=true` afin d'actualiser le jeu de données.
```julia; results="hidden"
const data_url = "https://scrippsco2.ucsd.edu/assets/data/atmospheric/stations/in_situ_co2/weekly/weekly_in_situ_co2_mlo.csv"
const data_file = "weekly_in_situ_co2_mlo.csv"
const force_download = false
```
```julia;
if force_download || !isfile(data_file)
println("Downloading data:")
println(" url = $data_url")
println(" file = $data_file")
open(data_file, "w") do f
req = HTTP.request(:GET, data_url)
@assert req.status == 200 "Error while downloading"
write(f, req.body)
end
open("download.stamp", "w") do f
write(f, string(today()))
end
else
println("Using local data:")
println(" file = $data_file")
println(" downloaded = ", readline("download.stamp"))
end
```
## Lecture
```julia; echo=false; results="hidden"
@info "Parsing data"
```
Les données d'entrée sont stockées au format CSV, et contiennent 44 lignes
d'informations préliminaires que nous reproduisons ici, et qui seront sautées
lors de la lecture des données.
```julia; wrap=false
skip = 44
open(data_file) do f
for _ in 1:skip; println(readline(f)); end
end
```
Le fichier est structuré en deux colonnes :
- `date` : date de la mesure
- `val` : concentration en CO2 (en ppm molaires)
```julia; results="hidden"
data_raw = CSV.read(data_file; skipto=skip+1, header=[:date, :val])
```
L'examen des premières et dernières lignes de données révèle qu'elles couvrent
la période de fin mars 1958 jusqu'à nos jours.
```julia; echo=false
info(df::DataFrame) = show(IOContext(stdout, :limit=>true, :displaysize=>(15, 100)), df);
```
```julia
info(data_raw)
```
## Vérification des données manquantes
```julia; echo=false; results="hidden"
@info "Checking for missing values"
```
Les relevés étant hebdomadaires, l'écart entre deux dates successives du jeu de
données devrait être de 7 jours. Un point manquant provoque un écart de 14
jours, ce qui devrait être rattrappable dans le reste de l'analyse ; au delà, il
faudra se poser des questions sur le traitement à apporter.
```julia
dates = data_raw.date
for i in 2:length(dates)
if dates[i]-dates[i-1] > Dates.Day(14)
println("Missing data: ",
dates[i-1], " - ", dates[i],
" (", dates[i]-dates[i-1], ")")
end
end
```
Il y a 12 périodes durant lesquelles les données sont manquantes, dont une en
particulier ayant duré 19 semaines en 1964. Le traitement devra en tenir compte.
## Aperçu global des données
```julia; echo=false; results="hidden"
@info "Plotting raw data"
```
Une visualisation de l'ensemble des données semble montrer une augmentation
tendancielle de la concentration en CO2, à laquelle se superpose une oscillation
à plus haute fréquence.
```julia; echo=false
plot(xlabel="Date", ylabel="CO2 [ppm]", legend=:bottomright)
plot!(data_raw.date, data_raw.val, label="measurements")
```
Un zoom sur les dernières années laisse penser que le cycle court se produit sur
une période annuelle, avec un minimum local atteint chaque année autour du mois
d'octobre.
```julia; echo=false
plot(xlabel="Date", ylabel="CO2 [ppm]", legend=:bottomright)
plot!(data_raw.date[end-150:end], data_raw.val[end-150:end], label="measurements")
```
# Analyse
Dans cette analyse, nous allons tenter de séparer ces deux composantes :
composante tendancielle "lisse" et composante oscillante de période annuelle.
La démarche que nous suivons est globalement la suivante : le jeu de données va
être découpé en périodes annuelles. Chacune de ces périodes annuelles sera
traitée (indépendamment des autres) afin d'en extraire une composante lisse, et
une composante périodique.
Si notre hypothèse est correcte, les composantes périodiques de chaque année
devraient être relativement comparables les unes aux autres, et pouvoir être
approchées par leur moyenne. On peut ensuite obtenir la composante lisse
tendancielle en éliminant la composante oscillatoire moyenne du signal d'origine.
La périodicité des données (hebdomadaire) n'étant que peu adaptée à un découpage
annuel, nous allons commencer par interpoler les données à une maille
journalière. Ceci nous permettra de découper le jeu de données en années.
## Travaux sur les dates
Il est plus simple d'interpoler entre deux nombres qu'entre deux dates. Dans la
suite, nous adopterons une convention selon laquelle chaque date peut être
représentée par le nombre de jours qui la sépare de la première mesure :
```julia; results="hidden"
date2num(d::Date) = Dates.value(d - data_raw.date[1])
num2date(n::Int) = data_raw.date[1] + Day(n)
```
Par exemple, pour les premières mesures :
```julia; echo=false
DataFrame(date=data_raw.date[1:3], date_num=date2num.(data_raw.date[1:3]))
```
Afin de comparer des données année par année, nous allons aussi enrichir les
données avec de nouvelles représentations de la date : une date peut être
décomposée comme un couple `(year, day)` dans lequel
- `year` représente l'année
- `day` représente l'indice du jour dans l'année (entre 0 et 365).
Dans ce formalisme, le 1er janvier 2020 est représenté par le couple
`(year=2020, day=0)`. Le 31 décembre 1983 est représenté par le couple
`(year=1983, day=364)`.
```julia
dayinyear(date::Date) = Dates.value(date - Date(year(date)))
dayinyear(num::Int) = dayinyear(num2date(num))
let d = Date("1983-12-31")
year(d), dayinyear(d)
end
```
Enfin, prévenons dès maintenant que tout le code de l'analyse fonctionne en
présence d'années bissextiles, mais rien n'a été fait pour les traiter à part :
l'impact, de l'ordre de 1/365 une année sur 4, a été jugé négligeable a priori.
## Interpolation à la maille journalière
```julia; echo=false; results="hidden"
@info "Interpolating daily data"
```
On construit un interpolateur linéaire basé sur les mesures de CO2 en fonction
de la "date numérique". C'est le paquet Julia
[`DataInterpolations`](https://github.com/PumasAI/DataInterpolations.jl) qui se
charge d'effectuer le gros du travail.
```julia
interp = DI.LinearInterpolation(data_raw.val, date2num.(data_raw.date));
```
Nous allons profiter de la construction des données interpolées pour gérer le
problème des données manquantes : nous n'interpolerons aucune donnée dans les
"trous" de 3 semaines ou plus. La construction de ce nouveau jeu de données
interpolées est aussi l'occasion d'enrichir les formats de représentation des
dates. Nous avons maintenant 5 colonnes dans notre jeu de données interpolé :
- `date` : date identifiant le jour de la mesure (ou de la valeur interpolée)
- `val` : valeur de la mesure de CO2 (ou de l'interpolation)
- `date_num` : date convertie en nombre
- `year` : composante de la date identifiant l'année
- `day` : composante de la date identifiant le jour dans l'année (entre 0 et 365)
```julia
data_interp = DataFrame(date_num=Int[], val=Float64[], date=Date[], year=Int[], day=Int[])
for i in 2:length(dates)
if dates[i]-dates[i-1] > Dates.Day(14)
# pas d'interpolation : seule la date de gauche est inclue
range = dates[i-1] => dates[i-1]
else
# Interpolation entre le début de la période et
# la fin (exclue car traitée en tant que début de
# la prochaine période)
range = dates[i-1] => dates[i]-Day(1)
end
# Pour chaque jour dans la période considérée,
# on ajoute une nouvelle ligne de données en interpolant
for date_num in date2num(first(range)):date2num(last(range))
date = num2date(date_num)
push!(data_interp, (date_num = date_num,
date = date,
year = year(date),
day = dayinyear(date),
val = interp(date_num)))
end
end
# 3 dernières lignes, pour vérification
last(data_interp, 3)
```
En zoomant sur les données interpolées autour de l'une des périodes de données
manquantes, on observe bien le résultat attendu : une interpolation linéaire
journalière lorsque les données sont disponibles, mais aucune interpolation
lorsque les données sont manquantes.
```julia; echo=false
plot(xlabel="Date", ylabel="CO2 [ppm]", legend=:topleft)
idx1 = (data_interp.date .> Date("2006-01-20")) .& (data_interp.date .< Date("2006-03-15"))
plot!(data_interp.date[idx1], data_interp.val[idx1], seriestype=:scatter,
label="interpolated values")
idx2 = (data_raw.date .> Date("2006-01-20")) .& (data_raw.date .< Date("2006-03-15"))
plot!(data_raw.date[idx2], data_raw.val[idx2], seriestype=:scatter,
label="measurements")
```
Enfin, nous ne gardons pour notre analyse que des années complètes. D'ailleurs,
afin de tester la validité de nos résultats, nous n'allons réaliser l'analyse
que sur une fraction des données ; nous garderons les 5 dernières années comme
données de test.
```julia
firstyear = minimum(data_interp.year)+1
lastyear = maximum(data_interp.year)-6
idx = (data_interp.year.>=firstyear) .& (data_interp.year.<=lastyear)
data = data_interp[idx, :];
```
Les données sur lesquelles portera l'analyse couvrent donc la période 1959-2014.
```julia
info(data)
```
Sur ces années complètes, la composante `day` de la date devrait être
globalement équirépartie entre 0 et 365, ce qui est globalement le cas. Les
données manquantes n'ont donc pas d'impact significatif de ce point de vue là.
```julia; echo=false
histogram(data.day, bins=0:31:365, label=nothing)
```
## Analyse des variations annuelles
```julia; echo=false; results="hidden"
@info "Fitting yearly oscillations"
```
Pour chaque année, on commence par tenter d'extraire la composante oscillante de
la mesure. En supposant que cette composante est périodique, il faut que la
valeur de cette composante en début d'année soit égale à celle de fin
d'année. On va aussi supposer que la composante tendancielle varie linéairement
en cours d'année. Si on note $C$ la concentration en CO2 et $d$ le jour, on
cherche à écrire :
$$
\forall d\in{0\ldots365}, \quad
C(d)
= \underbrace{\alpha + \beta d}_{\text{tendance locale}}
+ \underbrace{\phi(d)}_{\text{composante oscillante}}
$$
avec $\phi(0)=\phi(365)$ pour garantir la périodicité de la composante
oscillante. Afin de définir la constante $\alpha$ de manière unique, on fixe de
plus $\phi(0)=\phi(365)=0$.
On obtient donc
$$
\begin{align*}
\alpha &= C(0), \\[1em]
\beta &= \frac{C(365)-C(0)}{365}, \\[1em]
\phi(d) &= C(d) - \alpha - \beta d.
\end{align*}
$$
En pratique, plutôt que des valeurs ponctuelles $C(0)$ et $C(365)$, on prend
plutôt des valeurs (notées $C_0$ et $C_1$ dans le code) moyennées sur les 7
premiers et 7 derniers jours de l'année.
```julia
data.phi = copy(data.val)
data.alpha = zero(data.val)
data.beta = zero(data.val)
for year in unique(data.year)
idx = (data.year .== year)
C = data.val[idx .& (data.day .< 7) ] |> mean
C = data.val[idx .& (data.day .> 358)] |> mean
α = C
β = (C - C) / 365
data.alpha[idx] .= α
data.beta[idx] .= β
data.phi[idx] .-= α .+ β*data.day[idx]
end
```
Examinons par exemple l'effet de ce traitement sur les données interpolées de
l'année 1982. On voit, sur la figure du haut, les mesures brutes ainsi que la
tendance locale (affine). Sur la figure du bas, la composante périodique locale
vérifie bien les contraintes demandées, avec ses valeurs nulles aux bords.
```julia; echo=false
let df = data[data.year.==1982, :]
p1 = plot(ylabel="CO2 [ppm]")
plot!(p1, df.date, df.val, label="measurements")
plot!(p1, df.date, df.alpha.+df.beta.*df.day, label="alpha + beta * day")
p2 = plot(xlabel="date", ylabel="CO2 [ppm]")
plot!(p2, df.date, df.phi, label="phi")
l = @layout [a ; b]
plot(p1, p2, layout=l)
end
```
Pour que notre décomposition soit valide, il faut que les composantes
périodiques locales de chaque année se ressemblent, au point de pouvoir être
représentées par leur moyenne. Nous calculons donc cette moyenne pour toutes les années du jeu de données d'étude.
```julia
avg = by(data, :day, :phi=>mean, :phi=>std);
```
Et nous traçons l'ensemble des composantes oscillantes locales aux côtés de cette moyenne.
```julia; echo=false
plot(xlabel="date", ylabel="CO2 [ppm]")
plot!(data.day, data.phi, seriestype=:scatter, label="phi")
plot!(avg.day, avg.phi_mean, linewidth=3, label="phi (moyenne)")
plot!(avg.day, avg.phi_std, linewidth=1, label="phi (écart-type)")
```
Comme on pouvait s'y attendre, il reste une forte variabilité d'année en
année. Notons toutefois que l'écart-type, bien qu'important, reste un ordre de
grandeur en dessous des valeurs extrêmes, ce qui permet d'espérer que ce profil
moyen est suffisamment représentatif pour permettre d'extraire la composante
tendancielle lisse des données.
## Analyse des variations tendancielles
```julia; echo=false; output="hidden"
@info "Fitting underlying trend"
```
Nous sommes maintenant prêts à extraire la composante tendancielle des
mesures. Il suffit pour cela de retrancher aux données brutes la composante
oscillante moyenne.
```julia
data = join(data, avg, on=:day)
data.smooth = data.val .- data.phi_mean;
```
Même s'il reste des oscillations locales, nous constatons tout de même que la
composante tendancielle est devenue suffisamment lisse pour récupérer une forme
de monotonie.
```julia; echo=false
plot(xlabel="Date", ylabel="CO2 [ppm]", legend=:bottomright)
plot!(data.date, data.val, label="measurements")
plot!(data.date, data.smooth, label="composante tendancielle")
```
Nous allons maintenant tenter de caractériser la tendance sous-jacente. Au vu de
la courbe (concave), nous proposons un modèle quadratique de la forme :
$$
C(t) = \alpha + \beta t + \gamma t^2
$$
```julia; wrap=false
model = lm(@formula(smooth ~ date_num + date_num^2),
by(data, :year, smooth = :smooth=>mean, date_num = :date_num=>mean))
```
Ce genre de modèle semble correspondre assez bien aux données, avec un assez bon
niveau de confiance sur l'estimation des paramètres $\alpha$ et $\beta$.
```julia
α, β, γ = coef(model);
α1, β1, γ1 = coef(model)-2*stderror(model);
α2, β2, γ2 = coef(model)+2*stderror(model);
```
En première approximation, on a en particulier une hausse tendancielle de la
concentration de CO2 atmosphérique de l'ordre de
$\beta$ = `j @printf "%.2e" β` ppm/jour ($\pm$`j @printf "%.2f" 100*(β2-β)/β`%),
qui se traduit en une augmentation annuelle comprise entre
`j @printf "%.2f" 365*β1` et `j @printf "%.2f" 365*β2` ppm/an
avec un niveau de confiance de 95%.
On voit toutefois que l'incertitude sur $\beta$ en particulier est de nature à
engendrer une perte de prédictibilité du modèle en temps long.
```julia; echo=false
data.smooth_pred = predict(model, data)
plot(xlabel="Date", ylabel="CO2 [ppm]", legend=:bottomright)
plot!(data_raw.date, data_raw.val, label="measurements")
plot!(data.date, data.smooth_pred, label="smooth model", linewidth=3)
plot!(data.date, α .+ β1 * data.date_num .+ γ*data.date_num.^2, linecolor="red", label="smooth model (CI 95%)")
plot!(data.date, α .+ β2 * data.date_num .+ γ*data.date_num.^2, linecolor="red", label=nothing)
```
# Reconstruction du signal complet et prédiction
Nous avons maintenant tous les éléments nécessaires afin de reconstruire
l'évolution de la concentration en CO2 selon
```julia
date_num = date2num(Date(lastyear)):10:date2num(today()+Year(5))
prediction = DataFrame(date_num=date_num,
date=num2date.(date_num),
day=dayinyear.(date_num))
prediction.smooth = predict(model, prediction)
prediction = join(prediction, avg, on=:day)
prediction.val = prediction.smooth .+ prediction.phi_mean
idx = data_raw.date .> Date(lastyear)
plot(xlabel="Date", ylabel="CO2 [ppm]", legend=:bottomright)
plot!(data_raw.date[idx], data_raw.val[idx], label="measurements")
plot!(prediction.date, prediction.smooth, label="smooth model")
plot!(prediction.date, prediction.val, label="predicted value")
```
## Pour aller plus loin
```julia; wrap=false
model = glm(@formula(smooth ~ date_num),
by(data, :year, smooth = :smooth=>mean, date_num = :date_num=>mean),
InverseGaussian(), InverseSquareLink())
```
```julia
closeall()
```
<!-- Local Variables: -->
<!-- mode: markdown -->
<!-- End: -->
using Pkg
Pkg.activate(@__DIR__)
import Weave
Weave.tangle(joinpath(@__DIR__, "exercice.jmd"))
using PackageCompiler
create_sysimage(Symbol.(keys(Pkg.project().dependencies));
sysimage_path=Pkg.project().name * ".so",
precompile_execution_file=joinpath(@__DIR__, "exercice.jl"))
"-------------------------------------------------------------------------------------------"
" Atmospheric CO2 concentrations (ppm) derived from in situ air measurements "
" at Mauna Loa, Observatory, Hawaii: Latitude 19.5°N Longitude 155.6°W Elevation 3397m "
" "
" Source: R. F. Keeling, S. J. Walker, S. C. Piper and A. F. Bollenbacher "
" Scripps CO2 Program ( http://scrippsco2.ucsd.edu ) "
" Scripps Institution of Oceanography (SIO) "
" University of California "
" La Jolla, California USA 92093-0244 "
" "
" Status of data and correspondence: "
" "
" These data are subject to revision based on recalibration of standard gases. Questions "
" about the data should be directed to Dr. Ralph Keeling (rkeeling@ucsd.edu), Stephen Walker"
" (sjwalker@ucsd.edu) and Stephen Piper (scpiper@ucsd.edu), Scripps CO2 Program. "
" "
" Baseline data in this file through 06-Feb-2020 from archive dated 06-Feb-2020 08:55:31 "
" "
"-------------------------------------------------------------------------------------------"
" "
" Please cite as: "
" "
" C. D. Keeling, S. C. Piper, R. B. Bacastow, M. Wahlen, T. P. Whorf, M. Heimann, and "
" H. A. Meijer, Exchanges of atmospheric CO2 and 13CO2 with the terrestrial biosphere and "
" oceans from 1978 to 2000. I. Global aspects, SIO Reference Series, No. 01-06, Scripps "
" Institution of Oceanography, San Diego, 88 pages, 2001. "
" "
" If it is necessary to cite a peer-reviewed article, please cite as: "
" "
" C. D. Keeling, S. C. Piper, R. B. Bacastow, M. Wahlen, T. P. Whorf, M. Heimann, and "
" H. A. Meijer, Atmospheric CO2 and 13CO2 exchange with the terrestrial biosphere and "
" oceans from 1978 to 2000: observations and carbon cycle implications, pages 83-113, "
" in "A History of Atmospheric CO2 and its effects on Plants, Animals, and Ecosystems", "
" editors, Ehleringer, J.R., T. E. Cerling, M. D. Dearing, Springer Verlag, "
" New York, 2005. "
" "
"-------------------------------------------------------------------------------------------"
" "
" "
" The data file below contains 2 columns indicaing the date and CO2 "
" concentrations in micro-mol CO2 per mole (ppm), reported on the 2008A "
" SIO manometric mole fraction scale. These weekly values have been "
" adjusted to 12:00 hours at middle day of each weekly period as "
" indicated by the date in the first column. "
1958-03-29, 316.19
1958-04-05, 317.31
1958-04-12, 317.69
1958-04-19, 317.58
1958-04-26, 316.48
1958-05-03, 316.95
1958-05-17, 317.56
1958-05-24, 317.99
1958-07-05, 315.85
1958-07-12, 315.85
1958-07-19, 315.46
1958-07-26, 315.59
1958-08-02, 315.64
1958-08-09, 315.10
1958-08-16, 315.09
1958-08-30, 314.14
1958-09-06, 313.54
1958-11-08, 313.05
1958-11-15, 313.26
1958-11-22, 313.57
1958-11-29, 314.01
1958-12-06, 314.56
1958-12-13, 314.41
1958-12-20, 314.77
1958-12-27, 315.21
1959-01-03, 315.24
1959-01-10, 315.50
1959-01-17, 315.69
1959-01-24, 315.86
1959-01-31, 315.42
1959-02-14, 316.94
1959-02-21, 316.61
1959-02-28, 316.62
1959-03-07, 316.81
1959-03-21, 316.73
1959-03-28, 316.71
1959-04-04, 317.72
1959-04-11, 317.12
1959-04-18, 317.64
1959-04-25, 318.32
1959-05-02, 318.27
1959-05-09, 318.78
1959-05-16, 318.05
1959-05-23, 318.43
1959-06-06, 318.53
1959-06-13, 318.14
1959-06-20, 317.88
1959-06-27, 317.76
1959-07-04, 316.86
1959-07-11, 316.83
1959-07-18, 316.45
1959-07-25, 316.16
1959-08-01, 315.62
1959-08-08, 314.91
1959-08-22, 315.00
1959-08-29, 314.15
1959-09-05, 314.45
1959-09-12, 313.93
1959-09-19, 313.57
1959-09-26, 313.54
1959-10-03, 313.04
1959-10-10, 313.15
1959-10-17, 313.43
1959-10-24, 313.46
1959-10-31, 314.12
1959-11-07, 314.42
1959-11-14, 314.88
1959-11-21, 315.20
1959-11-28, 315.11
1959-12-05, 315.06
1959-12-12, 315.64
1959-12-19, 315.86
1959-12-26, 315.77
1960-01-02, 315.72
1960-01-09, 316.40
1960-01-16, 316.73
1960-01-23, 316.57
1960-01-30, 316.68
1960-02-06, 316.61
1960-02-13, 316.98
1960-02-20, 317.42
1960-02-27, 317.00
1960-03-05, 316.96
1960-03-12, 317.76
1960-03-19, 318.07
1960-03-26, 317.77
1960-04-02, 318.61
1960-04-09, 319.34
1960-04-16, 319.01
1960-04-23, 319.03
1960-04-30, 319.77
1960-05-07, 319.96
1960-05-14, 319.82
1960-05-21, 320.04
1960-05-28, 320.06
1960-06-04, 319.46
1960-06-11, 320.08
1960-06-18, 319.42
1960-06-25, 319.09
1960-07-02, 318.18
1960-07-09, 318.64
1960-07-16, 318.41
1960-07-23, 317.91
1960-07-30, 317.33
1960-08-06, 316.62
1960-08-13, 316.70
1960-08-20, 315.10
1960-08-27, 314.78
1960-09-03, 314.72
1960-09-10, 314.58
1960-09-17, 314.28
1960-09-24, 313.33
1960-10-01, 313.66
1960-10-08, 313.32
1960-10-15, 313.92
1960-10-22, 314.21
1960-10-29, 314.29
1960-11-05, 314.50
1960-11-12, 315.10
1960-11-19, 315.10
1960-11-26, 315.41
1960-12-03, 315.84
1960-12-10, 316.07
1960-12-17, 316.21
1960-12-24, 316.40
1960-12-31, 316.67
1961-01-07, 316.73
1961-01-14, 317.02
1961-01-21, 317.03
1961-01-28, 317.01
1961-02-04, 317.06
1961-02-11, 317.75
1961-02-18, 317.94
1961-02-25, 318.00
1961-03-04, 318.04
1961-03-11, 318.51
1961-03-18, 318.92
1961-03-25, 318.71
1961-04-01, 319.41
1961-04-08, 319.55
1961-04-15, 318.90
1961-04-22, 319.74
1961-04-29, 319.67
1961-05-06, 320.67
1961-05-13, 320.46
1961-05-20, 320.61
1961-05-27, 320.36
1961-06-03, 320.09
1961-06-10, 320.02
1961-06-17, 319.62
1961-06-24, 319.49
1961-07-01, 319.26
1961-07-08, 319.07
1961-07-15, 318.49
1961-07-22, 317.16
1961-07-29, 317.97
1961-08-05, 317.91
1961-08-12, 317.33
1961-08-19, 316.76
1961-08-26, 315.26
1961-09-02, 315.28
1961-09-09, 314.97
1961-09-16, 314.53
1961-09-23, 315.06
1961-09-30, 315.61
1961-10-07, 314.97
1961-10-14, 315.43
1961-10-21, 315.48
1961-10-28, 315.72
1961-11-04, 315.82
1961-11-11, 315.70
1961-11-18, 316.21
1961-11-25, 316.55
1961-12-02, 316.52
1961-12-09, 317.02
1961-12-16, 316.94
1961-12-23, 317.18
1961-12-30, 317.46
1962-01-06, 317.99
1962-01-13, 318.12
1962-01-20, 318.07
1962-01-27, 317.78
1962-02-03, 318.08
1962-02-10, 318.35
1962-02-17, 318.92
1962-02-24, 319.38
1962-03-03, 319.28
1962-03-10, 319.46
1962-03-17, 319.95
1962-03-24, 319.78
1962-03-31, 320.27
1962-04-07, 320.26
1962-04-14, 321.03
1962-04-21, 320.78
1962-04-28, 320.36
1962-05-05, 320.89
1962-05-12, 320.78
1962-05-19, 321.05
1962-05-26, 321.16
1962-06-02, 320.91
1962-06-09, 320.87
1962-06-16, 320.52
1962-06-23, 320.15
1962-06-30, 320.23
1962-07-07, 320.10
1962-07-14, 319.95
1962-07-21, 319.01
1962-07-28, 318.75
1962-08-04, 318.68
1962-08-11, 317.24
1962-08-18, 317.48
1962-09-15, 316.65
1962-09-22, 315.72
1962-09-29, 315.92
1962-10-06, 315.10
1962-10-13, 315.40
1962-10-20, 315.72
1962-10-27, 315.78
1962-11-03, 315.94
1962-11-10, 316.49
1962-11-17, 316.92
1962-11-24, 317.08
1962-12-01, 317.19
1962-12-08, 317.31
1962-12-15, 317.66
1962-12-22, 318.18
1963-01-05, 318.54
1963-01-12, 318.73
1963-01-19, 318.90
1963-01-26, 318.82
1963-02-02, 318.77
1963-02-09, 318.95
1963-02-23, 319.37
1963-03-02, 319.35
1963-03-09, 319.70
1963-03-16, 319.80
1963-03-23, 320.34
1963-03-30, 320.29
1963-04-06, 320.38
1963-04-13, 320.96
1963-04-20, 322.05
1963-04-27, 321.92
1963-05-11, 321.97
1963-05-18, 322.28
1963-05-25, 322.27
1963-06-01, 322.32
1963-06-08, 322.09
1963-06-15, 321.83
1963-06-22, 320.88
1963-06-29, 320.49
1963-07-06, 320.12
1963-07-13, 319.82
1963-07-20, 319.56
1963-07-27, 319.06
1963-08-03, 318.60
1963-08-10, 318.27
1963-08-17, 317.73
1963-08-24, 317.12
1963-08-31, 316.44
1963-09-07, 316.81
1963-09-14, 315.99
1963-09-21, 316.03
1963-09-28, 315.93
1963-10-05, 316.28
1963-10-12, 315.65
1963-10-19, 316.14
1963-10-26, 316.36
1963-11-02, 316.63
1963-11-09, 316.83
1963-11-16, 317.13
1963-11-30, 317.56
1963-12-07, 318.07
1963-12-14, 318.27
1963-12-21, 318.59
1963-12-28, 318.74
1964-01-04, 319.04
1964-01-11, 319.49
1964-01-18, 319.88
1964-05-30, 322.07
1964-06-06, 322.06
1964-06-27, 321.57
1964-07-04, 321.14
1964-07-11, 319.95
1964-07-18, 320.28
1964-07-25, 320.02
1964-08-01, 319.14
1964-08-15, 318.61
1964-08-22, 318.23
1964-08-29, 318.11
1964-09-05, 317.48
1964-09-12, 316.57
1964-09-19, 315.59
1964-09-26, 317.01
1964-10-03, 316.93
1964-10-10, 316.51
1964-10-17, 316.86
1964-10-24, 317.05
1964-10-31, 317.65
1964-11-07, 317.77
1964-11-14, 317.65
1964-11-21, 317.52
1964-11-28, 318.11
1964-12-05, 318.42
1964-12-12, 318.58
1964-12-19, 318.93
1964-12-26, 318.91
1965-01-02, 319.08
1965-01-09, 319.17
1965-01-16, 319.16
1965-01-23, 319.79
1965-01-30, 320.12
1965-02-06, 320.20
1965-02-13, 320.16
1965-02-20, 320.70
1965-02-27, 320.89
1965-03-06, 321.07
1965-03-13, 320.98
1965-03-20, 320.49
1965-03-27, 321.40
1965-04-03, 321.95
1965-04-10, 322.27
1965-04-17, 322.17
1965-04-24, 321.86
1965-05-01, 322.46
1965-05-08, 322.22
1965-05-15, 321.94
1965-05-22, 321.69
1965-05-29, 322.26
1965-06-05, 321.87
1965-06-12, 321.77
1965-06-19, 321.77
1965-06-26, 321.99
1965-07-03, 321.97
1965-07-10, 321.85
1965-07-17, 321.76
1965-07-24, 320.47
1965-07-31, 319.49
1965-08-07, 319.47
1965-08-14, 318.02
1965-08-21, 318.82
1965-08-28, 318.73
1965-09-04, 318.39
1965-09-11, 318.05
1965-09-18, 318.26
1965-09-25, 316.85
1965-10-02, 316.60
1965-10-09, 317.26
1965-10-16, 317.86
1965-10-23, 317.56
1965-10-30, 317.63
1965-11-06, 318.30
1965-11-13, 319.26
1965-11-20, 318.99
1965-11-27, 319.17
1965-12-04, 319.09
1965-12-11, 319.37
1965-12-18, 319.39
1965-12-25, 319.70
1966-01-01, 319.69
1966-01-08, 320.49
1966-01-15, 320.63
1966-01-22, 321.09
1966-01-29, 321.16
1966-02-05, 321.26
1966-02-12, 321.75
1966-02-19, 321.67
1966-02-26, 321.80
1966-03-05, 322.10
1966-03-12, 322.14
1966-03-19, 322.57
1966-03-26, 322.86
1966-04-02, 323.55
1966-04-09, 323.62
1966-04-16, 323.88
1966-04-23, 323.91
1966-04-30, 323.53
1966-05-07, 324.00
1966-05-14, 324.10
1966-05-21, 323.72
1966-05-28, 324.31
1966-06-04, 324.02
1966-06-11, 323.88
1966-06-18, 323.75
1966-06-25, 323.32
1966-07-02, 322.82
1966-07-09, 322.90
1966-08-06, 321.31
1966-08-13, 320.85
1966-08-20, 319.16
1966-08-27, 319.64
1966-09-03, 319.94
1966-09-10, 318.22
1966-09-17, 318.46
1966-09-24, 318.31
1966-10-01, 317.90
1966-10-08, 317.90
1966-10-15, 318.21
1966-10-22, 318.61
1966-10-29, 318.39
1966-11-12, 319.59
1966-11-19, 320.03
1966-11-26, 320.24
1966-12-03, 320.80
1966-12-10, 320.87
1966-12-17, 321.16
1966-12-24, 321.31
1966-12-31, 321.37
1967-01-07, 321.92
1967-01-14, 322.93
1967-02-04, 322.19
1967-02-11, 322.23
1967-02-18, 322.86
1967-02-25, 322.60
1967-03-04, 322.94
1967-03-11, 322.60
1967-03-18, 323.33
1967-03-25, 323.24
1967-04-01, 323.15
1967-04-08, 324.21
1967-04-15, 324.41
1967-04-22, 324.60
1967-04-29, 325.16
1967-05-06, 325.26
1967-05-13, 324.78
1967-05-20, 325.09
1967-05-27, 324.94
1967-06-03, 324.95
1967-06-10, 324.65
1967-06-17, 323.31
1967-06-24, 323.50
1967-07-01, 322.89
1967-07-08, 322.85
1967-07-15, 322.45
1967-07-22, 322.40
1967-07-29, 322.04
1967-08-05, 321.65
1967-08-12, 321.40
1967-08-19, 320.48
1967-08-26, 320.01
1967-09-02, 320.07
1967-09-09, 319.43
1967-09-16, 319.35
1967-09-23, 319.03
1967-09-30, 318.81
1967-10-07, 318.88
1967-10-14, 319.86
1967-10-21, 319.47
1967-10-28, 319.86
1967-11-04, 320.01
1967-11-11, 320.34
1967-11-18, 320.91
1967-11-25, 321.54
1967-12-02, 321.40
1967-12-09, 321.89
1967-12-16, 322.29
1967-12-23, 321.98
1967-12-30, 322.30
1968-01-06, 322.46
1968-01-13, 322.50
1968-01-20, 322.59
1968-01-27, 322.83
1968-02-03, 322.66
1968-02-10, 323.17
1968-02-17, 323.46
1968-02-24, 323.18
1968-03-02, 323.15
1968-03-09, 323.85
1968-03-16, 323.85
1968-03-23, 324.21
1968-03-30, 324.77
1968-04-06, 324.79
1968-04-13, 325.04
1968-04-20, 324.84
1968-04-27, 325.45
1968-05-04, 325.63
1968-05-11, 325.09
1968-05-18, 325.52
1968-05-25, 325.86
1968-06-01, 325.67
1968-06-08, 325.71
1968-06-15, 325.56
1968-06-22, 324.99
1968-06-29, 324.63
1968-07-06, 324.70
1968-07-13, 324.13
1968-07-20, 323.94
1968-07-27, 323.40
1968-08-03, 322.49
1968-08-10, 322.27
1968-08-17, 322.02
1968-08-24, 321.74
1968-08-31, 321.42
1968-09-07, 320.44
1968-09-14, 321.18
1968-09-21, 319.78
1968-09-28, 319.89
1968-10-05, 320.57
1968-10-12, 320.52
1968-10-19, 320.26
1968-10-26, 319.92
1968-11-02, 320.70
1968-11-09, 320.89
1968-11-16, 321.40
1968-11-23, 321.78
1968-11-30, 322.06
1968-12-07, 322.44
1968-12-14, 322.91
1968-12-21, 323.33
1968-12-28, 323.19
1969-01-04, 323.39
1969-01-11, 324.06
1969-01-18, 324.36
1969-01-25, 324.14
1969-02-01, 324.16
1969-02-08, 323.92
1969-02-15, 324.37
1969-02-22, 324.86
1969-03-01, 325.14
1969-03-08, 325.58
1969-03-15, 325.72
1969-03-22, 325.96
1969-03-29, 325.89
1969-04-05, 326.27
1969-04-12, 327.13
1969-04-19, 326.58
1969-04-26, 326.57
1969-05-03, 327.52
1969-05-10, 327.82
1969-05-17, 326.86
1969-05-24, 326.92
1969-05-31, 327.43
1969-06-07, 326.51
1969-06-14, 326.78
1969-06-21, 326.73
1969-06-28, 326.37
1969-07-05, 326.16
1969-07-12, 326.07
1969-07-19, 325.72
1969-07-26, 325.47
1969-08-02, 324.50
1969-08-09, 324.56
1969-08-16, 323.14
1969-08-23, 322.56
1969-08-30, 323.14
1969-09-06, 322.21
1969-09-13, 322.79
1969-09-20, 322.84
1969-09-27, 321.96
1969-10-04, 321.50
1969-10-11, 321.82
1969-10-18, 322.00
1969-10-25, 321.93
1969-11-01, 322.21
1969-11-08, 322.64
1969-11-15, 322.78
1969-11-22, 323.10
1969-11-29, 323.52
1969-12-06, 323.91
1969-12-13, 323.99
1969-12-20, 324.22
1969-12-27, 324.50
1970-01-03, 324.70
1970-01-10, 325.40
1970-01-17, 325.05
1970-01-24, 324.80
1970-01-31, 325.55
1970-02-07, 325.70
1970-02-14, 326.02
1970-02-21, 326.32
1970-02-28, 326.17
1970-03-07, 326.85
1970-03-14, 326.80
1970-03-21, 327.51
1970-03-28, 326.95
1970-04-04, 328.20
1970-04-11, 327.84
1970-04-18, 327.81
1970-04-25, 328.55
1970-05-02, 327.99
1970-05-09, 327.56
1970-05-16, 328.03
1970-05-23, 328.33
1970-05-30, 327.98
1970-06-06, 327.55
1970-06-13, 327.86
1970-06-20, 327.71
1970-06-27, 327.23
1970-07-04, 327.29
1970-07-11, 326.24
1970-07-18, 326.28
1970-07-25, 325.63
1970-08-01, 325.24
1970-08-08, 325.21
1970-08-15, 324.86
1970-08-22, 324.84
1970-08-29, 323.33
1970-09-05, 322.97
1970-09-12, 323.58
1970-09-19, 323.18
1970-09-26, 323.15
1970-10-03, 323.21
1970-10-10, 323.56
1970-10-17, 322.92
1970-10-24, 323.02
1970-10-31, 323.18
1970-11-07, 323.69
1970-11-14, 323.76
1970-11-21, 324.23
1970-11-28, 324.71
1970-12-05, 324.73
1970-12-12, 325.00
1970-12-19, 325.29
1970-12-26, 325.58
1971-01-02, 325.77
1971-01-09, 325.89
1971-01-16, 325.90
1971-01-23, 326.72
1971-01-30, 326.68
1971-02-06, 326.55
1971-02-13, 326.49
1971-02-20, 326.79
1971-02-27, 327.05
1971-03-06, 327.15
1971-03-13, 327.34
1971-03-20, 327.08
1971-03-27, 327.45
1971-04-03, 327.44
1971-04-10, 327.10
1971-04-17, 327.71
1971-04-24, 328.56
1971-05-01, 328.20
1971-05-08, 329.07
1971-05-15, 329.28
1971-05-22, 328.92
1971-05-29, 328.81
1971-06-05, 328.56
1971-06-12, 328.80
1971-06-19, 328.18
1971-06-26, 328.52
1971-07-03, 327.92
1971-07-10, 327.88
1971-07-17, 327.55
1971-07-24, 326.21
1971-07-31, 326.74
1971-08-07, 326.12
1971-08-14, 325.61
1971-08-21, 325.39
1971-08-28, 324.04
1971-09-04, 323.65
1971-09-11, 323.51
1971-09-18, 323.26
1971-09-25, 323.30
1971-10-02, 323.32
1971-10-09, 322.95
1971-10-16, 323.52
1971-10-23, 323.69
1971-10-30, 324.40
1971-11-06, 324.36
1971-11-13, 324.53
1971-11-20, 325.04
1971-11-27, 325.51
1971-12-04, 325.38
1971-12-11, 325.93
1971-12-18, 326.28
1971-12-25, 326.35
1972-01-01, 326.61
1972-01-08, 326.67
1972-01-15, 326.62
1972-01-22, 326.68
1972-01-29, 327.24
1972-02-05, 327.40
1972-02-12, 327.95
1972-02-19, 327.83
1972-02-26, 327.42
1972-03-04, 327.58
1972-03-11, 327.16
1972-03-18, 327.78
1972-03-25, 328.62
1972-04-01, 328.97
1972-04-08, 329.47
1972-04-15, 329.83
1972-04-22, 330.13
1972-04-29, 330.02
1972-05-06, 330.04
1972-05-13, 329.75
1972-05-20, 330.11
1972-05-27, 330.21
1972-06-03, 329.71
1972-06-10, 329.15
1972-06-17, 329.04
1972-06-24, 328.52
1972-07-01, 328.63
1972-07-08, 328.30
1972-07-15, 327.72
1972-07-22, 328.14
1972-07-29, 327.51
1972-08-05, 326.92
1972-08-12, 326.66
1972-08-19, 326.57
1972-08-26, 325.05
1972-09-02, 325.40
1972-09-09, 325.77
1972-09-16, 324.81
1972-09-23, 324.26
1972-09-30, 324.23
1972-10-07, 324.88
1972-10-14, 325.52
1972-10-21, 325.11
1972-10-28, 325.86
1972-11-04, 326.32
1972-11-11, 326.13
1972-11-18, 326.44
1972-11-25, 326.98
1972-12-02, 326.94
1972-12-09, 327.16
1972-12-16, 327.60
1972-12-23, 327.91
1972-12-30, 328.26
1973-01-06, 328.40
1973-01-13, 328.44
1973-01-20, 328.66
1973-01-27, 328.86
1973-02-03, 329.19
1973-02-10, 329.53
1973-02-17, 329.67
1973-02-24, 329.70
1973-03-03, 329.95
1973-03-10, 330.11
1973-03-17, 330.55
1973-03-24, 330.83
1973-03-31, 330.68
1973-04-07, 331.22
1973-04-14, 331.10
1973-04-21, 331.94
1973-04-28, 332.16
1973-05-05, 332.21
1973-05-12, 332.35
1973-05-19, 332.63
1973-05-26, 332.58
1973-06-02, 332.27
1973-06-09, 332.58
1973-06-16, 332.02
1973-06-23, 331.63
1973-06-30, 331.43
1973-07-07, 331.53
1973-07-14, 331.07
1973-07-21, 330.08
1973-07-28, 330.13
1973-08-04, 330.05
1973-08-11, 329.54
1973-08-18, 329.36
1973-08-25, 328.53
1973-09-01, 328.45
1973-09-08, 327.65
1973-09-15, 327.81
1973-09-22, 327.10
1973-09-29, 326.60
1973-10-06, 327.05
1973-10-13, 327.40
1973-10-20, 327.48
1973-10-27, 327.18
1973-11-03, 327.59
1973-11-10, 328.02
1973-11-17, 328.20
1973-11-24, 328.57
1973-12-01, 329.05
1973-12-08, 328.70
1973-12-15, 328.65
1973-12-22, 328.24
1973-12-29, 328.71
1974-01-05, 328.91
1974-01-12, 329.29
1974-01-19, 329.41
1974-01-26, 329.85
1974-02-02, 330.54
1974-02-09, 330.81
1974-02-16, 330.61
1974-02-23, 330.68
1974-03-02, 330.79
1974-03-09, 331.20
1974-03-16, 332.11
1974-03-23, 332.00
1974-03-30, 331.56
1974-04-06, 332.47
1974-04-13, 332.14
1974-04-20, 332.93
1974-04-27, 333.17
1974-05-04, 332.95
1974-05-11, 333.09
1974-05-18, 333.27
1974-05-25, 332.87
1974-06-01, 332.93
1974-06-08, 332.03
1974-06-15, 332.03
1974-06-22, 332.26
1974-06-29, 331.73
1974-07-06, 331.73
1974-07-13, 331.29
1974-07-20, 330.47
1974-07-27, 331.02
1974-08-03, 330.09
1974-08-10, 329.92
1974-08-17, 329.29
1974-08-24, 328.97
1974-08-31, 328.19
1974-09-07, 328.03
1974-09-14, 327.35
1974-09-21, 326.91
1974-09-28, 327.38
1974-10-05, 327.39
1974-10-12, 327.06
1974-10-19, 327.56
1974-10-26, 327.70
1974-11-02, 327.99
1974-11-09, 328.09
1974-11-16, 328.83
1974-11-23, 328.65
1974-11-30, 328.75
1974-12-07, 329.50
1974-12-14, 329.73
1974-12-21, 329.82
1974-12-28, 329.78
1975-01-04, 329.93
1975-01-11, 329.82
1975-01-18, 330.27
1975-01-25, 331.13
1975-02-01, 331.18
1975-02-08, 331.47
1975-02-15, 331.00
1975-02-22, 331.72
1975-03-01, 331.88
1975-03-08, 331.61
1975-03-15, 331.96
1975-03-22, 332.27
1975-03-29, 332.58
1975-04-05, 333.03
1975-04-12, 333.58
1975-04-19, 333.54
1975-04-26, 333.13
1975-05-03, 333.94
1975-05-10, 333.93
1975-05-17, 333.76
1975-05-24, 333.73
1975-05-31, 334.13
1975-06-07, 333.87
1975-06-14, 333.38
1975-06-21, 333.45
1975-06-28, 333.19
1975-07-05, 332.71
1975-07-12, 332.05
1975-07-19, 331.05
1975-07-26, 331.57
1975-08-02, 330.83
1975-08-09, 330.70
1975-08-16, 330.35
1975-08-23, 329.30
1975-08-30, 328.88
1975-09-06, 329.45
1975-09-13, 328.52
1975-09-20, 328.09
1975-09-27, 328.28
1975-10-04, 328.03
1975-10-11, 328.05
1975-10-18, 328.57
1975-10-25, 328.81
1975-11-01, 329.35
1975-11-08, 329.20
1975-11-15, 329.17
1975-11-22, 329.54
1975-11-29, 330.14
1975-12-06, 330.35
1975-12-13, 330.54
1975-12-20, 331.13
1975-12-27, 331.29
1976-01-03, 331.57
1976-01-10, 331.51
1976-01-17, 331.74
1976-01-24, 331.87
1976-01-31, 332.28
1976-02-07, 332.19
1976-02-14, 332.52
1976-02-21, 333.26
1976-02-28, 332.48
1976-03-06, 332.81
1976-03-13, 333.60
1976-03-20, 333.14
1976-03-27, 334.39
1976-04-03, 334.73
1976-04-10, 334.26
1976-04-17, 334.42
1976-04-24, 334.54
1976-05-01, 334.74
1976-05-08, 334.33
1976-05-15, 334.60
1976-05-22, 335.43
1976-05-29, 334.87
1976-06-05, 334.36
1976-06-12, 334.63
1976-06-19, 334.32
1976-07-03, 333.66
1976-07-10, 333.42
1976-07-17, 332.85
1976-07-24, 332.47
1976-07-31, 332.13
1976-08-07, 331.72
1976-08-14, 330.65
1976-08-21, 330.69
1976-08-28, 330.09
1976-09-04, 329.75
1976-09-11, 330.09
1976-09-18, 329.33
1976-09-25, 328.42
1976-10-02, 328.85
1976-10-09, 329.06
1976-10-16, 329.60
1976-10-23, 329.17
1976-10-30, 329.03
1976-11-06, 329.84
1976-11-13, 330.43
1976-11-20, 330.59
1976-11-27, 330.70
1976-12-04, 331.15
1976-12-11, 331.33
1976-12-18, 331.92
1976-12-25, 332.20
1977-01-01, 332.58
1977-01-08, 332.43
1977-01-15, 333.14
1977-01-22, 333.24
1977-01-29, 333.22
1977-02-05, 333.41
1977-02-12, 333.33
1977-02-19, 333.45
1977-02-26, 333.63
1977-03-05, 334.10
1977-03-12, 334.67
1977-03-19, 335.11
1977-03-26, 335.02
1977-04-02, 335.53
1977-04-09, 335.94
1977-04-16, 336.01
1977-04-23, 336.12
1977-04-30, 336.78
1977-05-07, 336.80
1977-05-14, 336.47
1977-05-21, 336.84
1977-05-28, 336.72
1977-06-04, 336.49
1977-06-11, 336.31
1977-06-18, 336.19
1977-06-25, 336.03
1977-07-02, 335.59
1977-07-09, 335.10
1977-07-16, 335.11
1977-07-23, 334.60
1977-07-30, 333.76
1977-08-06, 333.01
1977-08-13, 332.98
1977-08-20, 332.84
1977-08-27, 332.85
1977-09-03, 332.17
1977-09-10, 331.21
1977-09-17, 332.10
1977-09-24, 330.96
1977-10-01, 330.45
1977-10-08, 330.95
1977-10-15, 331.52
1977-10-22, 331.52
1977-10-29, 331.74
1977-11-05, 332.13
1977-11-12, 332.03
1977-11-19, 332.59
1977-11-26, 332.85
1977-12-03, 333.20
1977-12-10, 333.51
1977-12-17, 333.85
1977-12-24, 334.25
1977-12-31, 334.67
1978-01-07, 334.27
1978-01-14, 334.63
1978-01-21, 335.46
1978-01-28, 335.94
1978-02-04, 335.00
1978-02-11, 335.13
1978-02-18, 335.66
1978-02-25, 335.70
1978-03-04, 336.27
1978-03-11, 336.10
1978-03-18, 336.80
1978-03-25, 337.39
1978-04-01, 337.08
1978-04-08, 337.99
1978-04-15, 337.94
1978-04-22, 337.47
1978-04-29, 338.05
1978-05-06, 338.07
1978-05-13, 338.10
1978-05-20, 337.82
1978-05-27, 337.90
1978-06-03, 338.48
1978-06-10, 338.23
1978-06-17, 337.86
1978-06-24, 337.39
1978-07-01, 337.69
1978-07-08, 336.79
1978-07-15, 336.72
1978-07-22, 335.95
1978-07-29, 335.69
1978-08-05, 335.17
1978-08-12, 334.84
1978-08-19, 334.41
1978-08-26, 334.37
1978-09-02, 333.88
1978-09-09, 332.88
1978-09-16, 332.19
1978-09-23, 332.38
1978-09-30, 332.76
1978-10-07, 332.10
1978-10-14, 332.45
1978-10-21, 333.02
1978-10-28, 333.18
1978-11-04, 333.58
1978-11-11, 333.85
1978-11-18, 333.88
1978-11-25, 334.20
1978-12-02, 334.52
1978-12-09, 334.80
1978-12-16, 335.15
1978-12-23, 335.12
1978-12-30, 335.32
1979-01-06, 335.36
1979-01-13, 335.97
1979-01-20, 336.85
1979-01-27, 336.95
1979-02-03, 336.90
1979-02-10, 336.54
1979-02-17, 336.71
1979-02-24, 336.79
1979-03-03, 337.12
1979-03-10, 337.79
1979-03-17, 337.43
1979-03-24, 339.02
1979-03-31, 338.80
1979-04-07, 338.17
1979-04-14, 338.66
1979-04-21, 339.25
1979-04-28, 339.60
1979-05-05, 339.30
1979-05-12, 338.88
1979-05-19, 339.86
1979-05-26, 339.62
1979-06-02, 339.93
1979-06-09, 339.52
1979-06-16, 338.90
1979-06-23, 338.95
1979-06-30, 339.00
1979-07-07, 338.28
1979-07-14, 337.82
1979-07-21, 337.37
1979-07-28, 336.84
1979-08-04, 337.03
1979-08-11, 336.59
1979-08-18, 336.17
1979-08-25, 334.56
1979-09-01, 334.45
1979-09-08, 334.00
1979-09-15, 334.21
1979-09-22, 333.28
1979-09-29, 334.11
1979-10-06, 334.10
1979-10-13, 333.97
1979-10-20, 333.74
1979-10-27, 334.16
1979-11-03, 334.73
1979-11-10, 334.86
1979-11-17, 335.59
1979-11-24, 335.68
1979-12-01, 335.99
1979-12-08, 336.50
1979-12-15, 336.77
1979-12-22, 336.88
1979-12-29, 337.40
1980-01-05, 337.67
1980-01-12, 337.48
1980-01-19, 338.38
1980-01-26, 338.49
1980-02-02, 338.05
1980-02-09, 338.14
1980-02-16, 338.68
1980-02-23, 338.26
1980-03-01, 339.31
1980-03-08, 339.54
1980-03-15, 340.02
1980-03-22, 340.54
1980-03-29, 341.01
1980-04-05, 340.41
1980-04-12, 340.95
1980-04-19, 340.75
1980-04-26, 341.06
1980-05-03, 341.52
1980-05-10, 341.30
1980-05-17, 341.38
1980-05-24, 340.92
1980-05-31, 341.72
1980-06-07, 341.38
1980-06-14, 341.39
1980-06-21, 340.87
1980-06-28, 340.40
1980-07-05, 340.44
1980-07-12, 339.78
1980-07-19, 338.51
1980-07-26, 338.92
1980-08-02, 337.98
1980-08-09, 337.77
1980-08-16, 337.75
1980-08-23, 337.79
1980-08-30, 337.01
1980-09-06, 336.65
1980-09-13, 335.75
1980-09-20, 335.28
1980-09-27, 336.03
1980-10-04, 335.83
1980-10-11, 335.87
1980-10-18, 336.10
1980-10-25, 336.42
1980-11-01, 336.65
1980-11-08, 336.98
1980-11-15, 337.14
1980-11-22, 337.31
1980-11-29, 337.41
1980-12-06, 337.77
1980-12-13, 338.10
1980-12-20, 338.39
1980-12-27, 338.72
1981-01-03, 338.94
1981-01-10, 339.13
1981-01-17, 339.39
1981-01-24, 339.36
1981-01-31, 339.55
1981-02-07, 340.57
1981-02-14, 340.04
1981-02-21, 340.20
1981-02-28, 341.11
1981-03-07, 340.73
1981-03-14, 341.04
1981-03-21, 341.89
1981-03-28, 342.19
1981-04-04, 342.42
1981-04-11, 342.49
1981-04-18, 342.78
1981-04-25, 342.30
1981-05-02, 342.95
1981-05-09, 343.00
1981-05-16, 342.80
1981-05-23, 342.70
1981-05-30, 342.75
1981-06-06, 342.64
1981-06-13, 342.54
1981-06-20, 341.81
1981-06-27, 341.64
1981-07-04, 341.05
1981-07-11, 340.87
1981-07-18, 339.76
1981-07-25, 340.21
1981-08-01, 339.56
1981-08-08, 338.92
1981-08-15, 338.48
1981-08-22, 337.57
1981-08-29, 337.73
1981-09-05, 337.20
1981-09-12, 337.03
1981-09-19, 336.75
1981-09-26, 335.95
1981-10-03, 336.30
1981-10-10, 336.65
1981-10-17, 337.13
1981-10-24, 337.22
1981-10-31, 337.56
1981-11-07, 337.87
1981-11-14, 338.14
1981-11-21, 338.57
1981-11-28, 339.30
1981-12-05, 339.29
1981-12-12, 339.41
1981-12-19, 339.65
1981-12-26, 340.23
1982-01-02, 340.28
1982-01-09, 340.39
1982-01-16, 340.72
1982-01-23, 341.13
1982-01-30, 341.29
1982-02-06, 341.94
1982-02-13, 341.11
1982-02-20, 341.14
1982-02-27, 342.19
1982-03-06, 342.66
1982-03-13, 342.61
1982-03-20, 342.78
1982-03-27, 342.81
1982-04-03, 342.96
1982-04-10, 343.30
1982-04-17, 343.50
1982-04-24, 344.29
1982-05-01, 343.83
1982-05-08, 343.68
1982-05-15, 344.29
1982-05-22, 344.10
1982-05-29, 344.10
1982-06-05, 343.48
1982-06-12, 343.50
1982-06-19, 343.46
1982-06-26, 342.91
1982-07-03, 342.53
1982-07-10, 342.03
1982-07-17, 342.02
1982-07-24, 341.81
1982-07-31, 341.31
1982-08-07, 340.57
1982-08-14, 340.06
1982-08-21, 339.71
1982-08-28, 338.32
1982-09-04, 338.88
1982-09-11, 338.61
1982-09-18, 337.84
1982-09-25, 336.92
1982-10-02, 337.32
1982-10-09, 338.09
1982-10-16, 337.60
1982-10-23, 337.94
1982-10-30, 338.70
1982-11-06, 338.49
1982-11-13, 339.20
1982-11-20, 339.72
1982-11-27, 339.88
1982-12-04, 339.86
1982-12-11, 340.43
1982-12-18, 340.71
1982-12-25, 340.82
1983-01-01, 340.94
1983-01-08, 341.44
1983-01-15, 341.57
1983-01-22, 341.25
1983-01-29, 341.72
1983-02-05, 342.00
1983-02-12, 342.77
1983-02-19, 342.50
1983-02-26, 342.84
1983-03-05, 342.38
1983-03-12, 342.58
1983-03-19, 344.06
1983-03-26, 343.81
1983-04-02, 344.02
1983-04-09, 344.89
1983-04-16, 345.07
1983-04-23, 345.32
1983-04-30, 345.46
1983-05-07, 345.43
1983-05-14, 345.77
1983-05-21, 345.85
1983-05-28, 345.76
1983-06-04, 345.68
1983-06-11, 345.60
1983-06-18, 345.04
1983-06-25, 344.97
1983-07-02, 344.74
1983-07-09, 344.59
1983-07-16, 343.73
1983-07-23, 343.66
1983-07-30, 342.60
1983-08-06, 343.05
1983-08-13, 341.70
1983-08-20, 342.14
1983-08-27, 341.80
1983-09-03, 339.94
1983-09-10, 339.99
1983-09-17, 339.86
1983-09-24, 339.98
1983-10-01, 339.87
1983-10-08, 339.76
1983-10-15, 340.12
1983-10-22, 340.25
1983-10-29, 340.37
1983-11-05, 340.80
1983-11-12, 341.00
1983-11-19, 341.18
1983-11-26, 341.70
1983-12-03, 341.87
1983-12-10, 342.85
1983-12-17, 343.39
1983-12-24, 343.61
1983-12-31, 343.47
1984-01-07, 343.78
1984-01-14, 343.47
1984-01-21, 343.50
1984-01-28, 344.16
1984-02-04, 344.35
1984-02-11, 344.57
1984-02-18, 344.33
1984-02-25, 344.69
1984-03-03, 344.88
1984-03-10, 344.95
1984-03-17, 345.45
1984-03-24, 345.69
1984-04-28, 347.47
1984-05-05, 347.49
1984-05-12, 347.78
1984-05-19, 347.36
1984-05-26, 347.03
1984-06-02, 347.09
1984-06-09, 347.02
1984-06-16, 346.89
1984-06-23, 346.37
1984-06-30, 346.24
1984-07-07, 345.82
1984-07-14, 345.48
1984-07-21, 345.25
1984-07-28, 344.48
1984-08-04, 344.05
1984-08-11, 344.12
1984-08-18, 343.19
1984-08-25, 342.05
1984-09-01, 341.65
1984-09-08, 340.65
1984-09-15, 341.37
1984-09-22, 341.31
1984-09-29, 340.85
1984-10-06, 341.19
1984-10-13, 341.30
1984-10-20, 341.91
1984-10-27, 341.67
1984-11-03, 342.01
1984-11-10, 342.65
1984-11-17, 343.14
1984-11-24, 343.75
1984-12-01, 343.60
1984-12-08, 343.95
1984-12-15, 344.23
1984-12-22, 344.58
1984-12-29, 344.57
1985-01-05, 344.77
1985-01-12, 345.01
1985-01-19, 345.01
1985-01-26, 345.08
1985-02-02, 345.95
1985-02-09, 345.54
1985-02-16, 345.82
1985-02-23, 346.37
1985-03-02, 346.77
1985-03-09, 347.11
1985-03-16, 347.58
1985-03-23, 347.70
1985-03-30, 348.27
1985-04-06, 348.04
1985-04-13, 348.08
1985-04-20, 348.52
1985-04-27, 348.84
1985-05-04, 348.89
1985-05-11, 349.31
1985-05-18, 349.18
1985-05-25, 348.18
1985-06-01, 349.05
1985-06-08, 348.49
1985-06-15, 348.24
1985-06-22, 347.90
1985-06-29, 347.47
1985-07-06, 346.90
1985-07-13, 346.80
1985-07-20, 346.43
1985-07-27, 345.79
1985-08-10, 344.70
1985-08-17, 344.50
1985-08-24, 344.38
1985-08-31, 343.76
1985-09-07, 344.29
1985-09-14, 343.37
1985-09-21, 342.46
1985-09-28, 342.13
1985-10-05, 342.40
1985-10-12, 342.50
1985-10-19, 343.14
1985-10-26, 343.22
1985-11-02, 343.38
1985-11-09, 343.77
1985-11-16, 344.25
1985-11-23, 344.64
1985-11-30, 345.30
1985-12-07, 345.37
1985-12-14, 345.67
1985-12-21, 345.17
1985-12-28, 346.30
1986-01-04, 346.44
1986-01-11, 346.09
1986-01-18, 346.25
1986-01-25, 346.46
1986-02-01, 346.22
1986-02-08, 346.84
1986-02-15, 347.18
1986-02-22, 347.20
1986-03-01, 347.07
1986-03-08, 346.65
1986-03-15, 347.22
1986-03-22, 349.15
1986-03-29, 348.87
1986-04-05, 349.21
1986-04-12, 349.45
1986-04-19, 349.34
1986-04-26, 350.20
1986-05-03, 349.99
1986-05-10, 350.14
1986-05-17, 350.23
1986-05-24, 350.13
1986-05-31, 350.18
1986-06-07, 349.73
1986-06-14, 349.54
1986-06-21, 349.48
1986-06-28, 348.92
1986-07-05, 348.69
1986-07-12, 347.77
1986-07-19, 347.61
1986-07-26, 347.41
1986-08-02, 346.65
1986-08-09, 346.23
1986-08-16, 345.59
1986-08-23, 345.62
1986-08-30, 345.27
1986-09-06, 345.05
1986-09-13, 345.32
1986-09-20, 344.43
1986-09-27, 344.51
1986-10-04, 343.99
1986-10-11, 344.11
1986-10-18, 343.99
1986-10-25, 344.57
1986-11-01, 345.17
1986-11-08, 345.35
1986-11-15, 345.63
1986-11-22, 345.72
1986-11-29, 346.41
1986-12-06, 346.92
1986-12-13, 346.77
1986-12-20, 346.97
1986-12-27, 347.08
1987-01-03, 347.62
1987-01-10, 348.37
1987-01-17, 348.27
1987-01-24, 347.96
1987-01-31, 348.03
1987-02-07, 347.91
1987-02-14, 348.25
1987-02-21, 348.54
1987-02-28, 349.47
1987-03-07, 348.85
1987-03-14, 349.27
1987-03-21, 349.79
1987-03-28, 350.20
1987-04-04, 350.82
1987-04-11, 350.27
1987-04-18, 351.19
1987-04-25, 351.39
1987-05-02, 351.43
1987-05-09, 352.00
1987-05-16, 351.73
1987-05-23, 351.91
1987-05-30, 351.78
1987-06-06, 351.65
1987-06-13, 351.17
1987-06-20, 351.00
1987-06-27, 350.94
1987-07-04, 349.76
1987-07-11, 349.84
1987-07-18, 348.87
1987-07-25, 349.51
1987-08-01, 349.04
1987-08-08, 348.15
1987-08-15, 348.62
1987-08-22, 348.01
1987-08-29, 346.71
1987-09-05, 347.05
1987-09-12, 346.65
1987-09-19, 346.29
1987-09-26, 345.85
1987-10-03, 345.77
1987-10-10, 346.34
1987-10-17, 346.59
1987-10-24, 346.80
1987-10-31, 346.91
1987-11-07, 347.34
1987-11-14, 347.65
1987-11-21, 348.16
1987-11-28, 348.75
1987-12-05, 348.66
1987-12-12, 348.82
1987-12-19, 349.12
1987-12-26, 349.29
1988-01-02, 349.78
1988-01-09, 350.28
1988-01-16, 350.21
1988-01-23, 350.79
1988-01-30, 351.22
1988-02-06, 351.81
1988-02-13, 351.31
1988-02-20, 351.53
1988-02-27, 352.55
1988-03-05, 352.88
1988-03-12, 351.88
1988-03-19, 351.78
1988-03-26, 352.23
1988-04-02, 353.13
1988-04-09, 353.57
1988-04-16, 353.15
1988-04-23, 354.00
1988-04-30, 354.23
1988-05-07, 353.76
1988-05-14, 354.30
1988-05-21, 354.52
1988-05-28, 354.20
1988-06-04, 354.18
1988-06-11, 354.20
1988-06-18, 353.61
1988-06-25, 353.19
1988-07-02, 353.08
1988-07-09, 352.56
1988-07-16, 352.65
1988-07-23, 351.96
1988-07-30, 351.13
1988-08-06, 350.95
1988-08-13, 350.30
1988-08-20, 350.49
1988-08-27, 349.61
1988-09-03, 349.38
1988-09-10, 348.73
1988-09-17, 348.95
1988-09-24, 348.19
1988-10-01, 348.82
1988-10-08, 348.88
1988-10-15, 348.68
1988-10-22, 349.42
1988-10-29, 349.29
1988-11-05, 349.78
1988-11-12, 349.89
1988-11-19, 350.18
1988-11-26, 350.48
1988-12-03, 350.50
1988-12-10, 351.02
1988-12-17, 351.60
1988-12-24, 351.36
1988-12-31, 352.40
1989-01-07, 352.77
1989-01-14, 352.97
1989-01-21, 352.51
1989-01-28, 353.06
1989-02-04, 352.83
1989-02-11, 352.64
1989-02-18, 353.22
1989-02-25, 353.48
1989-03-04, 353.17
1989-03-11, 353.46
1989-03-18, 353.55
1989-03-25, 354.48
1989-04-01, 354.56
1989-04-08, 355.05
1989-04-15, 355.41
1989-04-22, 356.01
1989-04-29, 355.90
1989-05-06, 355.36
1989-05-13, 355.82
1989-05-20, 355.64
1989-05-27, 355.76
1989-06-03, 355.80
1989-06-10, 355.09
1989-06-17, 354.87
1989-06-24, 354.90
1989-07-01, 354.50
1989-07-08, 354.76
1989-07-15, 353.85
1989-07-22, 353.19
1989-07-29, 353.21
1989-08-05, 352.62
1989-08-12, 352.24
1989-08-19, 351.16
1989-08-26, 350.43
1989-09-02, 350.79
1989-09-09, 350.28
1989-09-16, 349.41
1989-09-23, 349.31
1989-09-30, 349.71
1989-10-07, 349.97
1989-10-14, 349.74
1989-10-21, 350.24
1989-10-28, 350.47
1989-11-04, 350.66
1989-11-11, 351.29
1989-11-18, 351.60
1989-11-25, 351.46
1989-12-02, 352.09
1989-12-09, 352.16
1989-12-16, 352.48
1989-12-23, 352.59
1989-12-30, 353.44
1990-01-06, 353.47
1990-01-13, 353.55
1990-01-20, 353.80
1990-01-27, 353.96
1990-02-03, 354.13
1990-02-10, 355.02
1990-02-17, 354.87
1990-02-24, 354.78
1990-03-03, 355.72
1990-03-10, 354.99
1990-03-17, 355.84
1990-03-24, 355.17
1990-03-31, 355.95
1990-04-07, 356.17
1990-04-14, 355.90
1990-04-21, 356.68
1990-04-28, 356.18
1990-05-05, 357.30
1990-05-12, 357.09
1990-05-19, 356.99
1990-05-26, 357.13
1990-06-02, 357.01
1990-06-09, 356.63
1990-06-16, 355.68
1990-06-23, 355.53
1990-06-30, 355.79
1990-07-07, 355.51
1990-07-14, 354.00
1990-07-21, 354.59
1990-07-28, 354.72
1990-08-04, 353.56
1990-08-11, 353.23
1990-08-18, 352.92
1990-08-25, 352.01
1990-09-01, 350.99
1990-09-08, 350.75
1990-09-15, 351.33
1990-09-22, 350.97
1990-09-29, 350.92
1990-10-06, 351.10
1990-10-13, 351.08
1990-10-20, 351.48
1990-10-27, 351.47
1990-11-03, 352.12
1990-11-10, 352.62
1990-11-17, 353.05
1990-11-24, 353.18
1990-12-01, 353.61
1990-12-08, 354.07
1990-12-15, 353.87
1990-12-22, 354.51
1990-12-29, 354.89
1991-01-05, 354.28
1991-01-12, 354.73
1991-01-19, 354.86
1991-01-26, 355.05
1991-02-02, 355.22
1991-02-09, 355.23
1991-02-16, 356.40
1991-02-23, 355.83
1991-03-02, 356.41
1991-03-09, 357.21
1991-03-16, 357.69
1991-03-23, 356.96
1991-03-30, 357.94
1991-04-06, 358.32
1991-04-13, 357.83
1991-04-20, 359.19
1991-04-27, 359.24
1991-05-04, 359.11
1991-05-11, 358.94
1991-05-18, 360.03
1991-05-25, 359.08
1991-06-01, 358.52
1991-06-08, 358.46
1991-06-15, 358.22
1991-06-22, 358.12
1991-06-29, 357.74
1991-07-06, 357.27
1991-07-13, 356.54
1991-07-20, 355.26
1991-07-27, 355.30
1991-08-03, 354.89
1991-08-10, 354.60
1991-08-17, 353.78
1991-08-24, 353.07
1991-08-31, 353.22
1991-09-07, 353.06
1991-09-14, 352.12
1991-09-21, 351.84
1991-09-28, 351.69
1991-10-05, 351.70
1991-10-12, 352.18
1991-10-19, 352.53
1991-10-26, 352.72
1991-11-02, 353.47
1991-11-09, 353.76
1991-11-16, 353.56
1991-11-23, 353.86
1991-11-30, 354.35
1991-12-07, 354.54
1991-12-14, 354.97
1991-12-21, 355.22
1991-12-28, 355.50
1992-01-04, 355.69
1992-01-11, 356.07
1992-01-18, 356.19
1992-01-25, 355.96
1992-02-01, 356.05
1992-02-08, 356.73
1992-02-15, 357.33
1992-02-22, 356.99
1992-02-29, 356.58
1992-03-07, 357.30
1992-03-14, 357.80
1992-03-21, 358.18
1992-03-28, 358.42
1992-04-04, 358.57
1992-04-11, 358.99
1992-04-18, 359.75
1992-04-25, 359.25
1992-05-02, 359.69
1992-05-09, 359.73
1992-05-16, 358.60
1992-05-23, 359.65
1992-05-30, 360.25
1992-06-06, 360.03
1992-06-13, 359.48
1992-06-20, 358.75
1992-06-27, 358.45
1992-07-04, 358.47
1992-07-11, 357.20
1992-07-18, 356.37
1992-07-25, 356.10
1992-08-01, 354.99
1992-08-08, 355.33
1992-08-15, 355.32
1992-08-22, 354.59
1992-08-29, 354.34
1992-09-05, 353.53
1992-09-12, 353.66
1992-09-19, 352.37
1992-09-26, 352.75
1992-10-03, 353.60
1992-10-10, 353.38
1992-10-17, 353.24
1992-10-24, 353.51
1992-10-31, 353.56
1992-11-07, 353.99
1992-11-14, 353.86
1992-11-21, 354.57
1992-11-28, 354.64
1992-12-05, 354.85
1992-12-12, 355.37
1992-12-19, 355.46
1992-12-26, 355.97
1993-01-02, 356.29
1993-01-09, 356.96
1993-01-16, 356.72
1993-01-23, 356.66
1993-01-30, 357.03
1993-02-06, 356.62
1993-02-13, 357.23
1993-02-20, 357.36
1993-02-27, 357.68
1993-03-06, 358.39
1993-03-13, 358.52
1993-03-20, 358.13
1993-03-27, 358.85
1993-04-03, 359.17
1993-04-10, 358.87
1993-04-17, 359.42
1993-04-24, 360.03
1993-05-01, 359.62
1993-05-08, 359.78
1993-05-15, 360.70
1993-05-22, 360.62
1993-05-29, 360.35
1993-06-05, 359.79
1993-06-12, 359.92
1993-06-19, 359.34
1993-06-26, 359.15
1993-07-03, 357.91
1993-07-10, 358.02
1993-07-17, 358.10
1993-07-24, 356.69
1993-07-31, 356.52
1993-08-07, 355.88
1993-08-14, 355.95
1993-08-21, 354.90
1993-08-28, 354.72
1993-09-04, 354.30
1993-09-11, 353.23
1993-09-18, 353.81
1993-09-25, 353.86
1993-10-02, 353.80
1993-10-09, 353.87
1993-10-16, 354.00
1993-10-23, 354.45
1993-10-30, 354.38
1993-11-06, 354.78
1993-11-13, 355.16
1993-11-20, 355.65
1993-11-27, 356.03
1993-12-04, 356.27
1993-12-11, 356.52
1993-12-18, 356.99
1993-12-25, 357.50
1994-01-01, 358.14
1994-01-08, 358.12
1994-01-15, 358.43
1994-01-22, 358.33
1994-01-29, 358.78
1994-02-05, 358.49
1994-02-12, 358.61
1994-02-19, 359.02
1994-02-26, 359.64
1994-03-05, 358.77
1994-03-12, 359.86
1994-03-19, 360.49
1994-03-26, 360.83
1994-04-02, 360.68
1994-04-09, 361.01
1994-04-16, 361.07
1994-04-23, 361.34
1994-04-30, 362.25
1994-05-07, 361.63
1994-05-14, 361.42
1994-05-21, 361.78
1994-05-28, 361.91
1994-06-04, 361.04
1994-06-11, 361.07
1994-06-18, 360.93
1994-06-25, 360.70
1994-07-02, 360.22
1994-07-09, 359.90
1994-07-16, 359.43
1994-07-23, 359.00
1994-07-30, 358.81
1994-08-06, 358.10
1994-08-13, 357.52
1994-08-20, 357.63
1994-08-27, 356.39
1994-09-03, 356.44
1994-09-10, 356.46
1994-09-17, 355.46
1994-09-24, 355.50
1994-10-01, 355.46
1994-10-08, 355.81
1994-10-15, 356.09
1994-10-22, 356.39
1994-10-29, 356.61
1994-11-05, 356.97
1994-11-12, 357.40
1994-11-19, 357.93
1994-11-26, 358.11
1994-12-03, 358.43
1994-12-10, 359.13
1994-12-17, 359.25
1994-12-24, 359.15
1994-12-31, 359.52
1995-01-07, 359.68
1995-01-14, 360.28
1995-01-21, 360.12
1995-01-28, 360.04
1995-02-04, 360.67
1995-02-11, 361.09
1995-02-18, 360.88
1995-02-25, 361.36
1995-03-04, 362.20
1995-03-11, 361.24
1995-03-18, 360.99
1995-03-25, 362.00
1995-04-01, 363.80
1995-04-08, 363.44
1995-04-15, 363.34
1995-04-22, 362.89
1995-04-29, 363.58
1995-05-06, 363.24
1995-05-13, 364.11
1995-05-20, 364.18
1995-05-27, 363.47
1995-06-03, 363.92
1995-06-10, 363.47
1995-06-17, 362.96
1995-06-24, 362.81
1995-07-01, 362.53
1995-07-08, 362.27
1995-07-15, 361.97
1995-07-22, 361.58
1995-07-29, 360.98
1995-08-05, 360.45
1995-08-12, 359.21
1995-08-19, 358.72
1995-08-26, 359.29
1995-09-02, 357.37
1995-09-09, 358.50
1995-09-16, 358.58
1995-09-23, 358.20
1995-09-30, 357.56
1995-10-07, 357.65
1995-10-14, 357.60
1995-10-21, 358.04
1995-10-28, 358.23
1995-11-04, 359.19
1995-11-11, 359.43
1995-11-18, 359.69
1995-11-25, 359.87
1995-12-02, 360.13
1995-12-09, 360.43
1995-12-16, 360.53
1995-12-23, 360.89
1995-12-30, 361.73
1996-01-06, 361.81
1996-01-13, 362.06
1996-01-20, 362.17
1996-01-27, 362.23
1996-02-03, 362.68
1996-02-10, 363.12
1996-02-17, 363.01
1996-02-24, 364.03
1996-03-02, 363.84
1996-03-09, 363.66
1996-03-16, 364.10
1996-03-23, 364.53
1996-03-30, 364.35
1996-04-06, 364.57
1996-04-13, 364.89
1996-04-20, 364.40
1996-04-27, 365.13
1996-05-04, 364.92
1996-05-11, 365.37
1996-05-18, 365.74
1996-05-25, 365.43
1996-06-01, 364.86
1996-06-08, 365.19
1996-06-15, 365.27
1996-06-22, 365.00
1996-06-29, 364.30
1996-07-06, 364.19
1996-07-13, 363.75
1996-07-20, 363.38
1996-07-27, 362.84
1996-08-03, 361.78
1996-08-10, 362.10
1996-08-17, 361.29
1996-08-24, 360.85
1996-08-31, 360.82
1996-09-07, 359.86
1996-09-14, 359.82
1996-09-21, 359.09
1996-09-28, 359.04
1996-10-05, 359.45
1996-10-12, 359.52
1996-10-19, 359.86
1996-10-26, 359.87
1996-11-02, 359.94
1996-11-09, 360.52
1996-11-16, 360.79
1996-11-23, 361.24
1996-11-30, 361.40
1996-12-07, 361.97
1996-12-14, 362.68
1996-12-21, 362.47
1996-12-28, 362.62
1997-01-04, 362.95
1997-01-11, 363.00
1997-01-18, 363.16
1997-01-25, 363.51
1997-02-01, 363.28
1997-02-08, 364.19
1997-02-15, 364.02
1997-02-22, 364.24
1997-03-01, 364.50
1997-03-08, 364.16
1997-03-15, 364.19
1997-03-22, 364.75
1997-03-29, 365.43
1997-04-05, 365.80
1997-04-12, 366.25
1997-04-19, 366.69
1997-04-26, 366.79
1997-05-03, 366.76
1997-05-10, 366.80
1997-05-17, 367.03
1997-05-24, 366.61
1997-05-31, 366.36
1997-06-07, 365.71
1997-06-14, 365.61
1997-06-21, 365.53
1997-06-28, 365.16
1997-07-05, 365.09
1997-07-12, 364.67
1997-07-19, 364.11
1997-07-26, 363.80
1997-08-02, 363.39
1997-08-09, 363.36
1997-08-16, 362.63
1997-08-23, 361.51
1997-08-30, 361.66
1997-09-06, 360.69
1997-09-13, 360.26
1997-09-20, 360.08
1997-09-27, 359.81
1997-10-04, 360.54
1997-10-11, 360.49
1997-10-18, 361.07
1997-10-25, 361.13
1997-11-01, 361.71
1997-11-08, 362.19
1997-11-15, 362.06
1997-11-22, 362.65
1997-11-29, 363.51
1997-12-06, 363.97
1997-12-13, 363.95
1997-12-20, 364.27
1997-12-27, 365.09
1998-01-03, 365.24
1998-01-10, 365.30
1998-01-17, 365.35
1998-01-24, 365.38
1998-01-31, 365.69
1998-02-07, 366.06
1998-02-14, 365.52
1998-02-21, 366.08
1998-02-28, 367.36
1998-03-07, 367.02
1998-03-14, 366.66
1998-03-21, 367.49
1998-03-28, 368.57
1998-04-04, 368.69
1998-04-11, 368.68
1998-04-18, 368.05
1998-04-25, 368.90
1998-05-02, 369.17
1998-05-09, 368.83
1998-05-16, 368.51
1998-05-23, 369.66
1998-05-30, 369.70
1998-06-06, 369.41
1998-06-13, 368.88
1998-06-20, 368.54
1998-06-27, 368.36
1998-07-04, 368.05
1998-07-11, 367.54
1998-07-18, 367.67
1998-07-25, 367.36
1998-08-01, 366.88
1998-08-08, 366.46
1998-08-15, 365.64
1998-08-22, 365.63
1998-08-29, 364.25
1998-09-05, 364.74
1998-09-12, 363.96
1998-09-19, 363.50
1998-09-26, 363.60
1998-10-03, 364.01
1998-10-10, 364.17
1998-10-17, 364.46
1998-10-24, 364.49
1998-10-31, 364.70
1998-11-07, 365.05
1998-11-14, 365.48
1998-11-21, 365.80
1998-11-28, 366.00
1998-12-05, 366.46
1998-12-12, 366.74
1998-12-19, 367.30
1998-12-26, 367.38
1999-01-02, 367.58
1999-01-09, 367.87
1999-01-16, 367.80
1999-01-23, 368.33
1999-01-30, 369.25
1999-02-06, 369.19
1999-02-13, 368.90
1999-02-20, 369.05
1999-02-27, 368.52
1999-03-06, 368.13
1999-03-13, 369.58
1999-03-20, 370.27
1999-03-27, 370.65
1999-04-03, 371.11
1999-04-10, 371.59
1999-04-17, 371.07
1999-04-24, 370.32
1999-05-01, 370.82
1999-05-08, 371.33
1999-05-15, 371.09
1999-05-22, 370.89
1999-05-29, 370.41
1999-06-05, 370.98
1999-06-12, 370.33
1999-06-19, 369.97
1999-06-26, 369.97
1999-07-03, 369.49
1999-07-10, 370.15
1999-07-17, 369.54
1999-07-24, 368.66
1999-07-31, 367.48
1999-08-07, 367.65
1999-08-14, 366.77
1999-08-21, 366.44
1999-08-28, 366.16
1999-09-04, 364.22
1999-09-11, 364.75
1999-09-18, 365.25
1999-09-25, 364.74
1999-10-02, 364.62
1999-10-09, 365.11
1999-10-16, 364.94
1999-10-23, 365.70
1999-10-30, 365.81
1999-11-06, 366.24
1999-11-13, 366.75
1999-11-20, 366.74
1999-11-27, 367.20
1999-12-04, 367.47
1999-12-11, 368.10
1999-12-18, 368.05
1999-12-25, 368.27
2000-01-01, 368.74
2000-01-08, 368.63
2000-01-15, 369.12
2000-01-22, 369.93
2000-01-29, 369.35
2000-02-05, 369.18
2000-02-12, 369.66
2000-02-19, 369.45
2000-02-26, 369.61
2000-03-04, 370.11
2000-03-11, 370.09
2000-03-18, 370.98
2000-03-25, 370.86
2000-04-01, 371.04
2000-04-08, 371.81
2000-04-15, 371.91
2000-04-22, 372.10
2000-04-29, 371.37
2000-05-06, 371.36
2000-05-13, 371.83
2000-05-20, 372.01
2000-05-27, 371.91
2000-06-03, 371.98
2000-06-10, 371.71
2000-06-17, 371.82
2000-06-24, 371.41
2000-07-01, 370.96
2000-07-08, 370.17
2000-07-15, 370.29
2000-07-22, 369.85
2000-07-29, 369.10
2000-08-05, 368.86
2000-08-12, 368.46
2000-08-19, 367.78
2000-08-26, 367.25
2000-09-02, 367.28
2000-09-09, 366.84
2000-09-16, 366.35
2000-09-23, 366.34
2000-09-30, 366.54
2000-10-07, 366.42
2000-10-14, 366.75
2000-10-21, 366.79
2000-10-28, 367.46
2000-11-04, 367.78
2000-11-11, 368.10
2000-11-18, 368.76
2000-11-25, 368.42
2000-12-02, 369.10
2000-12-09, 369.74
2000-12-16, 369.41
2000-12-23, 369.64
2000-12-30, 369.91
2001-01-06, 369.95
2001-01-13, 370.35
2001-01-20, 370.10
2001-01-27, 370.91
2001-02-03, 371.45
2001-02-10, 371.29
2001-02-17, 371.82
2001-02-24, 371.33
2001-03-03, 372.34
2001-03-10, 372.32
2001-03-17, 372.23
2001-03-24, 371.97
2001-03-31, 372.18
2001-04-07, 372.82
2001-04-14, 372.84
2001-04-21, 373.17
2001-04-28, 372.91
2001-05-05, 373.83
2001-05-12, 374.08
2001-05-19, 373.85
2001-05-26, 374.05
2001-06-02, 374.00
2001-06-09, 373.27
2001-06-16, 372.98
2001-06-23, 373.04
2001-06-30, 372.90
2001-07-07, 372.29
2001-07-14, 371.51
2001-07-21, 371.36
2001-07-28, 370.76
2001-08-04, 370.07
2001-08-11, 369.70
2001-08-18, 369.43
2001-08-25, 369.15
2001-09-01, 368.61
2001-09-08, 368.34
2001-09-15, 368.18
2001-09-22, 367.61
2001-09-29, 367.56
2001-10-06, 367.93
2001-10-13, 367.73
2001-10-20, 368.23
2001-10-27, 368.92
2001-11-03, 368.87
2001-11-10, 369.03
2001-11-17, 369.84
2001-11-24, 370.44
2001-12-01, 370.51
2001-12-08, 371.03
2001-12-15, 371.34
2001-12-22, 371.51
2001-12-29, 371.67
2002-01-05, 371.94
2002-01-12, 372.26
2002-01-19, 373.04
2002-01-26, 372.46
2002-02-02, 372.85
2002-02-09, 372.93
2002-02-16, 372.84
2002-02-23, 373.40
2002-03-02, 373.29
2002-03-09, 373.47
2002-03-16, 373.37
2002-03-23, 373.51
2002-03-30, 374.29
2002-04-06, 374.50
2002-04-13, 374.55
2002-04-20, 375.06
2002-04-27, 375.47
2002-05-04, 375.78
2002-05-11, 374.95
2002-05-18, 375.24
2002-05-25, 375.92
2002-06-01, 375.78
2002-06-08, 375.66
2002-06-15, 375.12
2002-06-22, 375.50
2002-06-29, 374.47
2002-07-06, 374.62
2002-07-13, 374.13
2002-07-20, 373.68
2002-07-27, 373.16
2002-08-03, 372.93
2002-08-10, 371.73
2002-08-17, 371.03
2002-08-24, 370.87
2002-08-31, 370.12
2002-09-07, 371.39
2002-09-14, 371.16
2002-09-21, 370.45
2002-09-28, 369.97
2002-10-05, 369.68
2002-10-12, 370.04
2002-10-19, 371.06
2002-10-26, 370.44
2002-11-02, 371.67
2002-11-09, 371.55
2002-11-16, 372.08
2002-11-23, 372.69
2002-11-30, 372.65
2002-12-07, 373.32
2002-12-14, 373.44
2002-12-21, 374.16
2002-12-28, 374.60
2003-01-04, 374.49
2003-01-11, 374.46
2003-01-18, 374.82
2003-01-25, 374.89
2003-02-01, 375.23
2003-02-08, 374.81
2003-02-15, 375.70
2003-02-22, 376.36
2003-03-01, 375.82
2003-03-08, 375.89
2003-03-15, 375.76
2003-03-22, 376.44
2003-03-29, 376.82
2003-04-05, 376.81
2003-04-12, 377.30
2003-04-19, 378.11
2003-04-26, 378.46
2003-05-03, 378.11
2003-05-10, 377.49
2003-05-17, 378.79
2003-05-24, 378.71
2003-05-31, 378.29
2003-06-07, 378.39
2003-06-21, 377.34
2003-06-28, 377.85
2003-07-05, 376.43
2003-07-12, 377.05
2003-07-19, 376.70
2003-07-26, 375.98
2003-08-02, 375.48
2003-08-09, 374.67
2003-08-16, 374.06
2003-08-23, 374.47
2003-08-30, 373.48
2003-09-06, 373.09
2003-09-13, 372.76
2003-09-20, 373.08
2003-09-27, 373.03
2003-10-04, 372.87
2003-10-25, 373.33
2003-11-01, 373.50
2003-11-08, 373.76
2003-11-15, 374.45
2003-11-22, 375.21
2003-11-29, 374.72
2003-12-06, 374.47
2003-12-13, 376.15
2003-12-20, 376.05
2003-12-27, 376.43
2004-01-03, 376.17
2004-01-10, 376.17
2004-01-17, 377.01
2004-01-24, 377.29
2004-01-31, 377.49
2004-02-07, 377.47
2004-02-14, 377.00
2004-02-21, 377.35
2004-02-28, 377.67
2004-03-06, 378.05
2004-03-13, 379.40
2004-03-20, 378.47
2004-03-27, 378.50
2004-04-03, 380.09
2004-04-10, 380.41
2004-04-17, 380.56
2004-04-24, 380.71
2004-05-01, 380.28
2004-05-08, 381.04
2004-05-15, 380.51
2004-05-22, 380.33
2004-05-29, 380.66
2004-06-05, 379.62
2004-06-12, 380.00
2004-06-19, 379.30
2004-06-26, 379.07
2004-07-03, 378.44
2004-07-10, 378.04
2004-07-17, 377.33
2004-07-24, 376.99
2004-07-31, 377.35
2004-08-07, 376.56
2004-08-14, 375.84
2004-08-21, 375.70
2004-08-28, 374.62
2004-09-04, 373.82
2004-09-11, 374.57
2004-09-18, 374.14
2004-09-25, 373.80
2004-10-02, 374.01
2004-10-09, 373.95
2004-10-16, 374.05
2004-10-23, 374.58
2004-10-30, 375.02
2004-11-06, 375.06
2004-11-13, 376.13
2004-11-20, 376.46
2004-11-27, 376.13
2004-12-04, 377.09
2004-12-11, 377.37
2004-12-18, 377.50
2004-12-25, 377.68
2005-01-01, 378.06
2005-01-08, 378.21
2005-01-15, 378.36
2005-01-22, 378.34
2005-01-29, 378.66
2005-02-05, 379.02
2005-02-12, 379.31
2005-02-19, 380.25
2005-03-26, 380.57
2005-04-02, 382.07
2005-04-09, 382.25
2005-04-16, 381.35
2005-04-23, 382.08
2005-04-30, 382.38
2005-05-07, 381.51
2005-05-14, 382.53
2005-05-21, 382.14
2005-05-28, 382.58
2005-06-04, 382.36
2005-06-11, 382.31
2005-06-18, 382.12
2005-06-25, 381.48
2005-07-02, 381.15
2005-07-09, 380.90
2005-07-16, 380.63
2005-07-23, 380.36
2005-07-30, 379.86
2005-08-06, 379.21
2005-08-13, 378.97
2005-08-20, 378.40
2005-08-27, 377.69
2005-09-03, 377.82
2005-09-10, 376.33
2005-09-17, 376.14
2005-09-24, 375.95
2005-10-01, 376.33
2005-10-08, 376.44
2005-10-15, 377.12
2005-10-22, 377.31
2005-10-29, 377.24
2005-11-05, 377.76
2005-11-12, 378.07
2005-11-19, 378.75
2005-11-26, 378.77
2005-12-03, 379.41
2005-12-10, 380.09
2005-12-17, 380.09
2005-12-24, 380.14
2005-12-31, 380.43
2006-01-07, 381.28
2006-01-14, 381.41
2006-01-21, 381.57
2006-01-28, 381.47
2006-02-04, 382.04
2006-02-25, 381.86
2006-03-04, 382.39
2006-03-11, 382.55
2006-03-18, 382.74
2006-03-25, 382.55
2006-04-01, 382.97
2006-04-08, 384.65
2006-04-15, 384.67
2006-04-22, 384.71
2006-04-29, 384.62
2006-05-06, 384.91
2006-05-13, 384.87
2006-05-20, 385.34
2006-05-27, 384.30
2006-06-03, 384.29
2006-06-10, 384.31
2006-06-17, 384.07
2006-06-24, 383.55
2006-07-01, 383.00
2006-07-08, 382.78
2006-07-15, 381.28
2006-07-22, 381.81
2006-07-29, 381.55
2006-08-05, 381.22
2006-08-12, 380.63
2006-08-19, 380.20
2006-08-26, 379.77
2006-09-02, 379.52
2006-09-09, 378.66
2006-09-16, 378.80
2006-09-23, 378.49
2006-09-30, 379.00
2006-10-07, 378.78
2006-10-14, 379.14
2006-10-21, 379.22
2006-10-28, 379.57
2006-11-04, 379.67
2006-11-11, 379.81
2006-11-18, 379.98
2006-11-25, 381.42
2006-12-02, 381.31
2006-12-09, 381.60
2006-12-16, 381.81
2006-12-23, 381.96
2006-12-30, 381.76
2007-01-06, 382.64
2007-01-13, 382.36
2007-01-20, 381.84
2007-02-03, 383.09
2007-02-10, 383.60
2007-02-17, 384.22
2007-02-24, 383.76
2007-03-03, 383.71
2007-03-10, 383.64
2007-03-17, 384.28
2007-03-24, 384.96
2007-03-31, 385.93
2007-04-07, 385.46
2007-04-14, 386.30
2007-04-21, 387.00
2007-04-28, 386.42
2007-05-05, 385.85
2007-05-12, 386.54
2007-05-19, 386.03
2007-05-26, 386.93
2007-06-02, 386.60
2007-06-09, 386.23
2007-06-16, 386.29
2007-06-23, 384.95
2007-06-30, 384.85
2007-07-07, 384.92
2007-07-14, 384.75
2007-07-21, 383.97
2007-07-28, 383.41
2007-08-04, 382.51
2007-08-11, 381.72
2007-08-18, 381.60
2007-08-25, 381.67
2007-09-01, 381.69
2007-09-08, 380.74
2007-09-15, 380.75
2007-09-22, 380.94
2007-09-29, 380.80
2007-10-06, 380.68
2007-10-13, 380.68
2007-10-20, 381.10
2007-10-27, 381.36
2007-11-03, 381.76
2007-11-10, 381.92
2007-11-17, 382.43
2007-11-24, 382.91
2007-12-01, 382.90
2007-12-08, 383.31
2007-12-15, 383.79
2007-12-22, 383.90
2007-12-29, 384.04
2008-01-05, 384.36
2008-01-12, 384.41
2008-01-19, 385.47
2008-01-26, 386.06
2008-02-02, 386.19
2008-02-09, 385.72
2008-02-16, 385.58
2008-02-23, 385.24
2008-03-01, 384.88
2008-03-08, 385.88
2008-03-15, 385.64
2008-03-22, 386.17
2008-03-29, 386.70
2008-04-05, 388.00
2008-04-12, 385.90
2008-04-19, 386.38
2008-04-26, 387.19
2008-05-03, 386.94
2008-05-10, 388.90
2008-05-17, 388.84
2008-05-24, 388.53
2008-05-31, 388.48
2008-06-07, 388.16
2008-06-14, 387.79
2008-06-21, 387.54
2008-06-28, 388.11
2008-07-05, 387.08
2008-07-12, 386.11
2008-07-19, 385.73
2008-07-26, 385.96
2008-08-02, 384.91
2008-08-09, 384.68
2008-08-16, 383.89
2008-08-23, 383.55
2008-08-30, 383.16
2008-09-06, 383.18
2008-09-13, 383.37
2008-09-20, 382.98
2008-09-27, 382.92
2008-10-04, 382.66
2008-10-11, 382.72
2008-10-18, 382.96
2008-10-25, 382.94
2008-11-01, 383.61
2008-11-08, 383.60
2008-11-15, 384.03
2008-11-22, 384.32
2008-11-29, 384.46
2008-12-06, 384.77
2008-12-13, 384.89
2008-12-20, 385.15
2008-12-27, 385.80
2009-01-03, 386.01
2009-01-10, 386.53
2009-01-17, 386.64
2009-01-24, 387.05
2009-01-31, 387.26
2009-02-07, 386.51
2009-02-14, 387.44
2009-02-21, 387.40
2009-02-28, 387.48
2009-03-07, 388.54
2009-03-14, 388.64
2009-03-21, 388.44
2009-03-28, 389.17
2009-04-04, 389.39
2009-04-11, 389.74
2009-04-18, 388.67
2009-04-25, 390.37
2009-05-02, 390.16
2009-05-09, 389.87
2009-05-16, 390.30
2009-05-23, 390.76
2009-05-30, 389.35
2009-06-06, 390.46
2009-06-13, 390.01
2009-06-20, 388.88
2009-06-27, 388.72
2009-07-04, 388.30
2009-07-11, 388.68
2009-07-18, 388.03
2009-07-25, 387.48
2009-08-01, 387.16
2009-08-08, 386.67
2009-08-15, 385.27
2009-08-22, 386.05
2009-08-29, 385.65
2009-09-05, 385.30
2009-09-12, 384.48
2009-09-19, 384.61
2009-09-26, 384.51
2009-10-03, 383.43
2009-10-10, 384.28
2009-10-17, 384.55
2009-10-24, 384.79
2009-10-31, 385.18
2009-11-07, 385.60
2009-11-14, 386.09
2009-11-21, 386.31
2009-11-28, 386.73
2009-12-05, 386.91
2009-12-12, 386.81
2009-12-19, 388.04
2009-12-26, 388.19
2010-01-02, 388.41
2010-01-09, 388.17
2010-01-16, 388.69
2010-01-23, 388.59
2010-01-30, 389.04
2010-02-06, 390.91
2010-02-13, 389.78
2010-02-20, 390.84
2010-02-27, 389.38
2010-03-06, 391.07
2010-03-13, 391.37
2010-03-20, 391.55
2010-03-27, 390.08
2010-04-03, 391.15
2010-04-10, 391.60
2010-04-17, 393.27
2010-04-24, 393.27
2010-05-01, 392.99
2010-05-08, 392.97
2010-05-15, 393.13
2010-05-22, 393.55
2010-05-29, 393.02
2010-06-05, 393.08
2010-06-12, 392.35
2010-06-19, 391.73
2010-06-26, 391.46
2010-07-03, 391.01
2010-07-10, 390.20
2010-07-17, 389.91
2010-07-24, 390.12
2010-07-31, 389.49
2010-08-07, 389.06
2010-08-14, 388.76
2010-08-21, 388.12
2010-08-28, 387.42
2010-09-04, 386.91
2010-09-11, 386.85
2010-09-18, 386.97
2010-09-25, 386.87
2010-10-02, 386.75
2010-10-09, 386.98
2010-10-16, 387.03
2010-10-23, 387.80
2010-10-30, 387.78
2010-11-06, 387.95
2010-11-13, 388.27
2010-11-20, 389.11
2010-11-27, 389.59
2010-12-04, 389.88
2010-12-11, 389.75
2010-12-18, 389.58
2010-12-25, 389.96
2011-01-01, 390.50
2011-01-08, 391.61
2011-01-15, 391.06
2011-01-22, 391.25
2011-01-29, 392.00
2011-02-05, 391.89
2011-02-12, 391.52
2011-02-19, 391.82
2011-02-26, 392.50
2011-03-05, 391.59
2011-03-12, 391.94
2011-03-19, 392.43
2011-03-26, 394.11
2011-04-02, 393.40
2011-04-09, 392.71
2011-04-16, 393.73
2011-04-23, 393.22
2011-04-30, 393.59
2011-05-07, 393.36
2011-05-14, 393.84
2011-05-21, 395.12
2011-05-28, 394.49
2011-06-04, 394.08
2011-06-11, 393.42
2011-06-18, 393.92
2011-06-25, 393.37
2011-07-02, 393.31
2011-07-09, 393.61
2011-07-16, 392.64
2011-07-23, 391.13
2011-07-30, 391.77
2011-08-06, 390.76
2011-08-13, 390.53
2011-08-20, 389.82
2011-08-27, 389.41
2011-09-03, 389.23
2011-09-10, 389.17
2011-09-17, 389.15
2011-09-24, 388.86
2011-10-01, 388.91
2011-10-08, 388.74
2011-10-15, 388.91
2011-10-22, 389.09
2011-10-29, 389.45
2011-11-05, 389.64
2011-11-12, 390.24
2011-11-19, 390.44
2011-11-26, 390.77
2011-12-03, 391.08
2011-12-10, 391.70
2011-12-17, 392.24
2011-12-24, 392.09
2011-12-31, 392.26
2012-01-07, 392.92
2012-01-14, 393.61
2012-01-21, 393.04
2012-01-28, 393.03
2012-02-04, 392.43
2012-02-11, 393.45
2012-02-18, 393.97
2012-02-25, 393.62
2012-03-03, 394.17
2012-03-10, 393.38
2012-03-17, 394.79
2012-03-24, 395.15
2012-03-31, 394.91
2012-04-07, 396.45
2012-04-14, 396.38
2012-04-21, 396.56
2012-04-28, 396.70
2012-05-05, 397.08
2012-05-12, 397.28
2012-05-19, 396.56
2012-05-26, 396.28
2012-06-02, 396.03
2012-06-09, 396.02
2012-06-16, 395.86
2012-06-23, 395.73
2012-06-30, 395.41
2012-07-07, 394.86
2012-07-14, 394.59
2012-07-21, 394.35
2012-07-28, 393.60
2012-08-04, 393.39
2012-08-11, 392.93
2012-08-18, 392.31
2012-08-25, 391.70
2012-09-01, 391.98
2012-09-08, 391.00
2012-09-15, 391.03
2012-09-22, 391.02
2012-09-29, 390.99
2012-10-20, 391.29
2012-10-27, 391.46
2012-11-03, 391.76
2012-11-10, 392.77
2012-11-17, 393.42
2012-11-24, 393.36
2012-12-01, 393.61
2012-12-08, 394.05
2012-12-15, 394.46
2012-12-22, 394.83
2012-12-29, 394.62
2013-01-05, 394.99
2013-01-12, 395.57
2013-01-19, 396.21
2013-01-26, 395.64
2013-02-02, 396.39
2013-02-09, 396.46
2013-02-16, 397.31
2013-02-23, 396.88
2013-03-02, 397.13
2013-03-09, 396.64
2013-03-16, 397.25
2013-03-23, 397.21
2013-03-30, 398.39
2013-04-06, 398.05
2013-04-13, 397.43
2013-04-20, 398.76
2013-04-27, 399.33
2013-05-04, 399.64
2013-05-11, 399.78
2013-05-18, 400.04
2013-05-25, 400.22
2013-06-01, 399.43
2013-06-08, 398.91
2013-06-15, 398.58
2013-06-22, 398.50
2013-06-29, 398.65
2013-07-06, 397.56
2013-07-13, 397.48
2013-07-20, 396.83
2013-07-27, 396.98
2013-08-03, 396.61
2013-08-10, 395.55
2013-08-17, 395.24
2013-08-24, 394.73
2013-08-31, 394.33
2013-09-07, 393.52
2013-09-14, 393.25
2013-09-21, 393.53
2013-09-28, 393.22
2013-10-05, 393.47
2013-10-12, 393.52
2013-10-19, 393.93
2013-10-26, 394.13
2013-11-02, 394.39
2013-11-09, 395.25
2013-11-16, 394.85
2013-11-23, 395.66
2013-11-30, 396.06
2013-12-07, 396.27
2013-12-14, 396.52
2013-12-21, 397.30
2013-12-28, 397.59
2014-01-04, 397.90
2014-01-11, 397.82
2014-01-18, 398.13
2014-01-25, 397.75
2014-02-01, 398.02
2014-02-08, 397.98
2014-02-15, 397.79
2014-02-22, 398.24
2014-03-01, 397.92
2014-03-08, 398.88
2014-03-15, 400.68
2014-03-22, 399.62
2014-03-29, 400.34
2014-04-05, 401.32
2014-04-12, 401.22
2014-04-19, 401.29
2014-04-26, 401.42
2014-05-03, 401.74
2014-05-10, 401.51
2014-05-17, 402.18
2014-05-24, 401.44
2014-05-31, 402.12
2014-06-07, 401.55
2014-06-14, 401.31
2014-06-21, 401.21
2014-06-28, 400.57
2014-07-05, 400.06
2014-07-12, 399.58
2014-07-19, 398.54
2014-07-26, 397.86
2014-08-02, 397.86
2014-08-09, 397.45
2014-08-16, 397.23
2014-08-23, 396.75
2014-08-30, 396.37
2014-09-06, 396.35
2014-09-13, 394.80
2014-09-20, 395.32
2014-09-27, 395.55
2014-10-04, 395.57
2014-10-11, 395.49
2014-10-18, 395.72
2014-10-25, 395.91
2014-11-01, 396.52
2014-11-08, 396.90
2014-11-15, 397.34
2014-11-22, 397.24
2014-11-29, 398.10
2014-12-06, 398.26
2014-12-13, 398.92
2014-12-20, 399.09
2014-12-27, 399.01
2015-01-03, 399.92
2015-01-10, 399.86
2015-01-17, 399.72
2015-01-24, 399.98
2015-01-31, 400.20
2015-02-07, 400.02
2015-02-14, 400.15
2015-02-21, 400.36
2015-02-28, 401.03
2015-03-07, 401.63
2015-03-14, 401.80
2015-03-21, 400.79
2015-03-28, 402.50
2015-04-04, 402.74
2015-04-11, 403.88
2015-04-18, 403.80
2015-04-25, 403.22
2015-05-02, 404.07
2015-05-09, 404.09
2015-05-16, 404.31
2015-05-23, 403.85
2015-05-30, 403.81
2015-06-06, 403.45
2015-06-13, 402.72
2015-06-20, 402.63
2015-06-27, 402.36
2015-07-04, 402.25
2015-07-11, 401.71
2015-07-18, 401.02
2015-07-25, 401.30
2015-08-01, 398.74
2015-08-08, 399.21
2015-08-15, 399.12
2015-08-22, 399.03
2015-08-29, 398.80
2015-09-05, 398.16
2015-09-12, 397.10
2015-09-19, 397.57
2015-09-26, 397.42
2015-10-03, 397.74
2015-10-10, 398.51
2015-10-17, 398.61
2015-10-24, 398.43
2015-10-31, 398.87
2015-11-07, 399.53
2015-11-14, 400.75
2015-11-21, 400.42
2015-11-28, 400.83
2015-12-05, 400.91
2015-12-12, 402.40
2015-12-19, 402.32
2015-12-26, 402.01
2016-01-02, 402.25
2016-01-09, 402.23
2016-01-16, 402.68
2016-01-23, 403.26
2016-01-30, 402.79
2016-02-06, 404.98
2016-02-13, 403.22
2016-02-20, 404.59
2016-02-27, 403.98
2016-03-05, 403.99
2016-03-12, 404.51
2016-03-19, 405.01
2016-03-26, 406.16
2016-04-02, 405.70
2016-04-09, 408.56
2016-04-16, 408.16
2016-04-23, 407.70
2016-04-30, 407.84
2016-05-07, 407.51
2016-05-14, 407.54
2016-05-21, 407.41
2016-05-28, 407.92
2016-06-04, 407.52
2016-06-11, 406.99
2016-06-18, 407.02
2016-06-25, 406.40
2016-07-02, 405.96
2016-07-09, 404.93
2016-07-16, 403.64
2016-07-23, 403.71
2016-07-30, 403.76
2016-08-06, 403.22
2016-08-13, 402.11
2016-08-20, 401.78
2016-08-27, 401.43
2016-09-03, 401.27
2016-09-10, 401.13
2016-09-17, 401.25
2016-09-24, 400.85
2016-10-01, 400.82
2016-10-08, 401.20
2016-10-15, 401.70
2016-10-22, 401.82
2016-10-29, 402.38
2016-11-05, 403.15
2016-11-12, 403.12
2016-11-19, 403.95
2016-11-26, 404.44
2016-12-03, 404.16
2016-12-10, 404.28
2016-12-17, 404.63
2016-12-24, 404.66
2016-12-31, 405.38
2017-01-07, 405.94
2017-01-14, 405.91
2017-01-21, 406.37
2017-01-28, 406.35
2017-02-04, 406.20
2017-02-11, 406.02
2017-02-18, 406.17
2017-02-25, 408.07
2017-03-04, 407.06
2017-03-11, 406.53
2017-03-18, 406.73
2017-03-25, 407.89
2017-04-01, 408.66
2017-04-08, 407.19
2017-04-15, 409.12
2017-04-22, 409.89
2017-04-29, 409.04
2017-05-06, 409.54
2017-05-13, 409.83
2017-05-20, 410.18
2017-05-27, 409.88
2017-06-03, 409.67
2017-06-10, 409.62
2017-06-17, 408.82
2017-06-24, 408.43
2017-07-01, 407.77
2017-07-08, 407.68
2017-07-15, 407.11
2017-07-22, 406.76
2017-07-29, 406.50
2017-08-05, 405.93
2017-08-12, 405.55
2017-08-19, 404.81
2017-08-26, 404.54
2017-09-02, 404.10
2017-09-09, 403.39
2017-09-16, 403.44
2017-09-23, 402.95
2017-09-30, 402.73
2017-10-07, 403.19
2017-10-14, 403.60
2017-10-21, 404.05
2017-10-28, 404.25
2017-11-04, 404.28
2017-11-11, 404.51
2017-11-18, 405.53
2017-11-25, 406.36
2017-12-02, 406.85
2017-12-09, 406.16
2017-12-16, 406.50
2017-12-23, 407.07
2017-12-30, 407.24
2018-01-06, 407.96
2018-01-13, 408.08
2018-01-20, 408.26
2018-01-27, 408.05
2018-02-03, 407.63
2018-02-10, 408.41
2018-02-17, 408.46
2018-02-24, 408.69
2018-03-03, 408.77
2018-03-10, 409.64
2018-03-17, 408.69
2018-03-24, 409.77
2018-03-31, 409.63
2018-04-07, 409.41
2018-04-14, 410.10
2018-04-21, 411.36
2018-04-28, 410.58
2018-05-05, 409.75
2018-05-12, 411.62
2018-05-19, 411.43
2018-05-26, 411.81
2018-06-02, 411.15
2018-06-09, 411.24
2018-06-16, 410.56
2018-06-23, 410.81
2018-06-30, 410.19
2018-07-07, 409.29
2018-07-14, 409.07
2018-07-21, 408.49
2018-07-28, 408.08
2018-08-04, 407.36
2018-08-11, 407.28
2018-08-18, 407.07
2018-08-25, 406.63
2018-09-01, 405.98
2018-09-08, 405.61
2018-09-15, 405.60
2018-09-22, 405.69
2018-09-29, 405.56
2018-10-06, 405.56
2018-10-13, 405.91
2018-10-20, 406.42
2018-10-27, 406.51
2018-11-03, 406.83
2018-11-10, 407.69
2018-11-17, 409.11
2018-11-24, 408.46
2018-12-01, 408.56
2018-12-08, 408.92
2018-12-15, 409.56
2018-12-22, 409.73
2018-12-29, 409.26
2019-01-05, 410.32
2019-01-12, 409.73
2019-01-19, 412.31
2019-01-26, 410.91
2019-02-02, 410.97
2019-02-09, 412.12
2019-02-16, 411.79
2019-02-23, 411.46
2019-03-02, 412.08
2019-03-09, 412.26
2019-03-16, 412.87
2019-03-23, 410.73
2019-03-30, 412.37
2019-04-06, 412.62
2019-04-13, 413.36
2019-04-20, 413.94
2019-04-27, 414.27
2019-05-04, 414.41
2019-05-11, 414.95
2019-05-18, 415.08
2019-05-25, 414.66
2019-06-01, 414.21
2019-06-08, 414.45
2019-06-15, 413.85
2019-06-22, 413.68
2019-06-29, 413.38
2019-07-06, 412.69
2019-07-13, 412.30
2019-07-20, 411.76
2019-07-27, 410.32
2019-08-03, 410.50
2019-08-10, 410.48
2019-08-17, 410.05
2019-08-24, 409.52
2019-08-31, 409.32
2019-09-07, 408.80
2019-09-14, 408.61
2019-09-21, 408.50
2019-09-28, 408.28
2019-10-05, 407.99
2019-10-12, 408.61
2019-10-19, 408.77
2019-10-26, 408.68
2019-11-02, 409.86
2019-11-09, 410.15
2019-11-16, 410.22
2019-11-23, 410.48
2019-11-30, 410.92
2019-12-07, 411.27
2019-12-14, 411.67
2019-12-21, 412.30
2019-12-28, 412.59
2020-01-04, 413.19
2020-01-11, 413.39
2020-01-25, 413.36
2020-02-01, 413.99
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