Date Value
Oct 1, 2024   337.20 million
Sep 1, 2024   337.03 million
Aug 1, 2024   336.85 million
Jul 1, 2024   336.67 million
Jun 1, 2024   336.51 million
May 1, 2024   336.37 million
Apr 1, 2024   336.24 million
Mar 1, 2024   336.12 million
Feb 1, 2024   336.00 million
Jan 1, 2024   335.89 million
Dec 1, 2023   335.75 million
Nov 1, 2023   335.60 million
Oct 1, 2023   335.45 million
Sep 1, 2023   335.28 million
Aug 1, 2023   335.09 million
Jul 1, 2023   334.91 million
Jun 1, 2023   334.75 million
May 1, 2023   334.61 million
Apr 1, 2023   334.48 million
Mar 1, 2023   334.36 million
Feb 1, 2023   334.24 million
Jan 1, 2023   334.13 million
Dec 1, 2022   334.03 million
Nov 1, 2022   333.89 million
Oct 1, 2022   333.76 million
Sep 1, 2022   333.60 million
Aug 1, 2022   333.43 million
Jul 1, 2022   333.27 million
Jun 1, 2022   333.13 million
May 1, 2022   333.00 million
Apr 1, 2022   332.88 million
Mar 1, 2022   332.76 million
Feb 1, 2022   332.69 million
Jan 1, 2022   332.68 million
Dec 1, 2021   332.60 million
Nov 1, 2021   332.51 million
Oct 1, 2021   332.41 million
Sep 1, 2021   332.31 million
Aug 1, 2021   332.20 million
Jul 1, 2021   332.05 million
Jun 1, 2021   331.95 million
May 1, 2021   331.88 million
Apr 1, 2021   331.81 million
Mar 1, 2021   331.75 million
Feb 1, 2021   331.73 million
Jan 1, 2021   331.79 million
Dec 1, 2020   331.84 million
Nov 1, 2020   331.83 million
Oct 1, 2020   331.76 million
Sep 1, 2020   331.68 million
Aug 1, 2020   331.60 million
Jul 1, 2020   331.53 million
Jun 1, 2020   331.47 million
May 1, 2020   331.44 million
Apr 1, 2020   331.46 million
Mar 1, 2020   329.34 million
Feb 1, 2020   329.24 million
Jan 1, 2020   329.14 million
Dec 1, 2019   329.02 million
Nov 1, 2019   328.89 million
Oct 1, 2019   328.74 million
Sep 1, 2019   328.58 million
Aug 1, 2019   328.41 million
Jul 1, 2019   328.24 million
Jun 1, 2019   328.10 million
May 1, 2019   327.96 million
Apr 1, 2019   327.84 million
Mar 1, 2019   327.73 million
Feb 1, 2019   327.64 million
Jan 1, 2019   327.54 million
Dec 1, 2018   327.43 million
Nov 1, 2018   327.31 million
Oct 1, 2018   327.17 million
Sep 1, 2018   327.01 million
Aug 1, 2018   326.85 million
Jul 1, 2018   326.69 million
Jun 1, 2018   326.53 million
May 1, 2018   326.39 million
Apr 1, 2018   326.26 million
Mar 1, 2018   326.14 million
Feb 1, 2018   326.03 million
Jan 1, 2018   325.93 million
Dec 1, 2017   325.80 million
Nov 1, 2017   325.66 million
Oct 1, 2017   325.51 million
Sep 1, 2017   325.34 million
Aug 1, 2017   325.16 million
Jul 1, 2017   324.99 million
Jun 1, 2017   324.80 million
May 1, 2017   324.64 million
Apr 1, 2017   324.48 million
Mar 1, 2017   324.34 million
Feb 1, 2017   324.21 million
Jan 1, 2017   324.08 million
Dec 1, 2016   323.91 million
Nov 1, 2016   323.74 million
Oct 1, 2016   323.56 million
Sep 1, 2016   323.35 million
Aug 1, 2016   323.14 million
Jul 1, 2016   322.94 million
Jun 1, 2016   322.73 million
May 1, 2016   322.55 million
Apr 1, 2016   322.37 million
Mar 1, 2016   322.20 million
Feb 1, 2016   322.04 million
Jan 1, 2016   321.86 million
Dec 1, 2015   321.71 million
Nov 1, 2015   321.50 million
Oct 1, 2015   321.31 million
Sep 1, 2015   321.08 million
Aug 1, 2015   320.86 million
Jul 1, 2015   320.64 million
Jun 1, 2015   320.43 million
May 1, 2015   320.24 million
Apr 1, 2015   320.06 million
Mar 1, 2015   319.89 million
Feb 1, 2015   319.73 million
Jan 1, 2015   319.59 million
Dec 1, 2014   319.41 million
Nov 1, 2014   319.22 million
Oct 1, 2014   319.01 million
Sep 1, 2014   318.77 million
Aug 1, 2014   318.54 million
Jul 1, 2014   318.30 million
Jun 1, 2014   318.11 million
May 1, 2014   317.91 million
Apr 1, 2014   317.73 million
Mar 1, 2014   317.56 million
Feb 1, 2014   317.41 million
Jan 1, 2014   317.24 million
Dec 1, 2013   317.06 million
Nov 1, 2013   316.88 million
Oct 1, 2013   316.66 million
Sep 1, 2013   316.43 million
Aug 1, 2013   316.20 million
Jul 1, 2013   315.99 million
Jun 1, 2013   315.81 million
May 1, 2013   315.61 million
Apr 1, 2013   315.46 million
Mar 1, 2013   315.30 million
Feb 1, 2013   315.16 million
Jan 1, 2013   315.04 million
Dec 1, 2012   314.87 million
Nov 1, 2012   314.70 million
Oct 1, 2012   314.50 million
Sep 1, 2012   314.28 million
Aug 1, 2012   314.05 million
Jul 1, 2012   313.83 million
Jun 1, 2012   313.63 million
May 1, 2012   313.45 million
Apr 1, 2012   313.28 million
Mar 1, 2012   313.11 million
Feb 1, 2012   312.93 million
Jan 1, 2012   312.79 million
Dec 1, 2011   312.59 million
Nov 1, 2011   312.40 million
Oct 1, 2011   312.21 million
Sep 1, 2011   312.00 million
Aug 1, 2011   311.76 million
Jul 1, 2011   311.56 million
Jun 1, 2011   311.35 million
May 1, 2011   311.18 million
Apr 1, 2011   311.01 million
Mar 1, 2011   310.83 million
Feb 1, 2011   310.69 million
Jan 1, 2011   310.54 million
Dec 1, 2010   310.35 million
Nov 1, 2010   310.17 million
Oct 1, 2010   309.99 million
Sep 1, 2010   309.76 million
Aug 1, 2010   309.54 million
Jul 1, 2010   309.32 million
Jun 1, 2010   309.12 million
May 1, 2010   308.94 million
Apr 1, 2010   308.76 million
Mar 1, 2010   308.57 million
Feb 1, 2010   308.38 million
Jan 1, 2010   308.17 million
Dec 1, 2009   307.95 million
Nov 1, 2009   307.76 million
Oct 1, 2009   307.52 million
Sep 1, 2009   307.27 million
Aug 1, 2009   307.01 million
Jul 1, 2009   306.77 million
Jun 1, 2009   306.54 million
May 1, 2009   306.32 million
Apr 1, 2009   306.11 million
Mar 1, 2009   305.92 million
Feb 1, 2009   305.71 million
Jan 1, 2009   305.52 million
Dec 1, 2008   305.30 million
Nov 1, 2008   305.09 million
Oct 1, 2008   304.86 million
Sep 1, 2008   304.61 million
Aug 1, 2008   304.36 million
Jul 1, 2008   304.09 million
Jun 1, 2008   303.85 million
May 1, 2008   303.62 million
Apr 1, 2008   303.38 million
Mar 1, 2008   303.19 million
Feb 1, 2008   302.97 million
Jan 1, 2008   302.75 million
Dec 1, 2007   302.53 million
Nov 1, 2007   302.29 million
Oct 1, 2007   302.03 million
Sep 1, 2007   301.77 million
Aug 1, 2007   301.50 million
Jul 1, 2007   301.23 million
Jun 1, 2007   300.97 million
May 1, 2007   300.73 million
Apr 1, 2007   300.51 million
Mar 1, 2007   300.29 million
Feb 1, 2007   300.10 million
Jan 1, 2007   299.89 million
Dec 1, 2006   299.66 million
Nov 1, 2006   299.40 million
Oct 1, 2006   299.16 million
Sep 1, 2006   298.91 million
Aug 1, 2006   298.63 million
Jul 1, 2006   298.38 million
Jun 1, 2006   298.12 million
May 1, 2006   297.87 million
Apr 1, 2006   297.65 million
Mar 1, 2006   297.42 million
Feb 1, 2006   297.22 million
Jan 1, 2006   296.99 million
Dec 1, 2005   296.76 million
Nov 1, 2005   296.51 million
Oct 1, 2005   296.31 million
Sep 1, 2005   296.04 million
Aug 1, 2005   295.77 million
Jul 1, 2005   295.52 million
Jun 1, 2005   295.26 million
May 1, 2005   295.03 million
Apr 1, 2005   294.78 million
Mar 1, 2005   294.56 million
Feb 1, 2005   294.38 million
Jan 1, 2005   294.23 million
Dec 1, 2004   294.02 million
Nov 1, 2004   293.80 million
Oct 1, 2004   293.57 million
Sep 1, 2004   293.31 million
Aug 1, 2004   293.06 million
Jul 1, 2004   292.81 million
Jun 1, 2004   292.57 million
May 1, 2004   292.35 million
Apr 1, 2004   292.11 million
Mar 1, 2004   291.89 million
Feb 1, 2004   291.72 million
Jan 1, 2004   291.55 million
Dec 1, 2003   291.36 million
Nov 1, 2003   291.16 million
Oct 1, 2003   290.92 million
Sep 1, 2003   290.66 million
Aug 1, 2003   290.39 million
Jul 1, 2003   290.11 million
Jun 1, 2003   289.82 million
May 1, 2003   289.55 million
Apr 1, 2003   289.40 million
Mar 1, 2003   289.26 million
Feb 1, 2003   289.13 million
Jan 1, 2003   289.00 million
Dec 1, 2002   288.80 million
Nov 1, 2002   288.61 million
Oct 1, 2002   288.38 million
Sep 1, 2002   288.13 million
Aug 1, 2002   287.87 million
Jul 1, 2002   287.63 million
Jun 1, 2002   287.39 million
May 1, 2002   287.15 million
Apr 1, 2002   286.93 million
Mar 1, 2002   286.72 million
Feb 1, 2002   286.54 million
Jan 1, 2002   286.34 million
Dec 1, 2001   286.14 million
Nov 1, 2001   285.92 million
Oct 1, 2001   285.69 million
Sep 1, 2001   285.49 million
Aug 1, 2001   285.22 million
Jul 1, 2001   284.97 million
Jun 1, 2001   284.73 million
May 1, 2001   284.49 million
Apr 1, 2001   284.27 million
Mar 1, 2001   284.05 million
Feb 1, 2001   283.84 million
Jan 1, 2001   283.65 million
Dec 1, 2000   283.44 million
Nov 1, 2000   283.20 million
Oct 1, 2000   282.96 million
Sep 1, 2000   282.69 million
Aug 1, 2000   282.42 million
Jul 1, 2000   282.16 million
Jun 1, 2000   281.89 million
May 1, 2000   281.64 million
Apr 1, 2000   281.42 million
Mar 1, 2000   281.16 million
Feb 1, 2000   280.94 million
Jan 1, 2000   280.73 million
Dec 1, 1999   280.47 million
Nov 1, 1999   280.22 million
Oct 1, 1999   279.95 million
Sep 1, 1999   279.65 million
Aug 1, 1999   279.35 million
Jul 1, 1999   279.04 million
Jun 1, 1999   278.75 million
May 1, 1999   278.46 million
Apr 1, 1999   278.20 million
Mar 1, 1999   277.94 million
Feb 1, 1999   277.74 million
Jan 1, 1999   277.53 million
Dec 1, 1998   277.27 million
Nov 1, 1998   277.02 million
Oct 1, 1998   276.75 million
Sep 1, 1998   276.45 million
Aug 1, 1998   276.16 million
Jul 1, 1998   275.85 million
Jun 1, 1998   275.57 million
May 1, 1998   275.30 million
Apr 1, 1998   275.04 million
Mar 1, 1998   274.78 million
Feb 1, 1998   274.58 million
Jan 1, 1998   274.37 million
Dec 1, 1997   274.11 million
Nov 1, 1997   273.87 million
Oct 1, 1997   273.59 million
Sep 1, 1997   273.29 million
Aug 1, 1997   272.97 million
Jul 1, 1997   272.65 million
Jun 1, 1997   272.36 million
May 1, 1997   272.08 million
Apr 1, 1997   271.82 million
Mar 1, 1997   271.56 million
Feb 1, 1997   271.32 million
Jan 1, 1997   271.09 million
Dec 1, 1996   270.86 million
Nov 1, 1996   270.61 million
Oct 1, 1996   270.31 million
Sep 1, 1996   270.02 million
Aug 1, 1996   269.70 million
Jul 1, 1996   269.39 million
Jun 1, 1996   269.11 million
May 1, 1996   268.84 million
Apr 1, 1996   268.58 million
Mar 1, 1996   268.32 million
Feb 1, 1996   268.09 million
Jan 1, 1996   267.88 million
Dec 1, 1995   267.67 million
Nov 1, 1995   267.44 million
Oct 1, 1995   267.18 million
Sep 1, 1995   266.88 million
Aug 1, 1995   266.57 million
Jul 1, 1995   266.28 million
Jun 1, 1995   265.99 million
May 1, 1995   265.72 million
Apr 1, 1995   265.47 million
Mar 1, 1995   265.21 million
Feb 1, 1995   264.98 million
Jan 1, 1995   264.75 million
Dec 1, 1994   264.51 million
Nov 1, 1994   264.26 million
Oct 1, 1994   264.00 million
Sep 1, 1994   263.72 million
Aug 1, 1994   263.42 million
Jul 1, 1994   263.13 million
Jun 1, 1994   262.84 million
May 1, 1994   262.57 million
Apr 1, 1994   262.32 million
Mar 1, 1994   262.04 million
Feb 1, 1994   261.81 million
Jan 1, 1994   261.60 million
Dec 1, 1993   261.35 million
Nov 1, 1993   261.10 million
Oct 1, 1993   260.84 million
Sep 1, 1993   260.54 million
Aug 1, 1993   260.23 million
Jul 1, 1993   259.92 million
Jun 1, 1993   259.62 million
May 1, 1993   259.34 million
Apr 1, 1993   259.07 million
Mar 1, 1993   258.81 million
Feb 1, 1993   258.57 million
Jan 1, 1993   258.33 million
Dec 1, 1992   258.06 million
Nov 1, 1992   257.80 million
Oct 1, 1992   257.50 million
Sep 1, 1992   257.19 million
Aug 1, 1992   256.86 million
Jul 1, 1992   256.51 million
Jun 1, 1992   256.20 million
May 1, 1992   255.89 million
Apr 1, 1992   255.59 million
Mar 1, 1992   255.29 million
Feb 1, 1992   255.03 million
Jan 1, 1992   254.78 million
Dec 1, 1991   254.53 million
Nov 1, 1991   254.27 million
Oct 1, 1991   253.97 million
Sep 1, 1991   253.65 million
Aug 1, 1991   253.31 million
Jul 1, 1991   252.98 million
Jun 1, 1991   252.68 million
May 1, 1991   252.29 million
Apr 1, 1991   251.96 million
Mar 1, 1991   251.68 million
Feb 1, 1991   251.45 million
Jan 1, 1991   251.21 million
Dec 1, 1990   251.00 million
Nov 1, 1990   250.77 million
Oct 1, 1990   250.53 million
Sep 1, 1990   250.23 million
Aug 1, 1990   249.92 million
Jul 1, 1990   249.62 million
Jun 1, 1990   249.34 million
May 1, 1990   249.05 million
Apr 1, 1990   248.79 million
Jul 1, 1989   246.82 million
Jul 1, 1988   244.50 million
Jul 1, 1987   242.29 million
Jul 1, 1986   240.13 million
Jul 1, 1985   237.92 million
Jul 1, 1984   235.82 million
Jul 1, 1983   233.79 million
Jul 1, 1982   231.66 million
Jul 1, 1981   229.47 million
Jul 1, 1980   227.22 million
Jul 1, 1979   225.06 million
Jul 1, 1978   222.58 million
Jul 1, 1977   220.24 million
Jul 1, 1976   218.04 million
Jul 1, 1975   215.97 million
Jul 1, 1974   213.85 million
Jul 1, 1973   211.91 million
Jul 1, 1972   209.90 million
Jul 1, 1971   207.66 million
Jul 1, 1970   205.05 million
Jul 1, 1969   202.68 million
Jul 1, 1968   200.71 million
Jul 1, 1967   198.71 million
Jul 1, 1966   196.56 million
Jul 1, 1965   194.30 million
Jul 1, 1964   191.89 million
Jul 1, 1963   189.24 million
Jul 1, 1962   186.54 million
Jul 1, 1961   183.69 million
Jul 1, 1960   180.67 million
Jul 1, 1959   177.83 million
Jul 1, 1958   174.88 million
Jul 1, 1957   171.98 million
Jul 1, 1956   168.90 million
Jul 1, 1955   165.93 million
Jul 1, 1954   163.03 million
Jul 1, 1953   160.18 million
Jul 1, 1952   157.55 million
Jul 1, 1951   154.88 million
Jul 1, 1950   152.27 million
Jul 1, 1949   149.19 million
Jul 1, 1948   146.63 million
Jul 1, 1947   144.13 million
Jul 1, 1946   141.39 million
Jul 1, 1945   139.93 million
Jul 1, 1944   138.40 million
Jul 1, 1943   136.74 million
Jul 1, 1942   134.86 million
Jul 1, 1941   133.40 million
Jul 1, 1940   132.12 million
Jul 1, 1939   130.88 million
Jul 1, 1938   129.82 million
Jul 1, 1937   128.82 million
Jul 1, 1936   128.05 million
Jul 1, 1935   127.25 million
Jul 1, 1934   126.37 million
Jul 1, 1933   125.58 million
Jul 1, 1932   124.84 million
Jul 1, 1931   124.04 million
Jul 1, 1930   123.08 million
Jul 1, 1929   121.77 million
Jul 1, 1928   120.51 million
Jul 1, 1927   119.04 million
Jul 1, 1926   117.40 million
Jul 1, 1925   115.83 million
Jul 1, 1924   114.11 million
Jul 1, 1923   111.95 million
Jul 1, 1922   110.05 million
Jul 1, 1921   108.54 million
Jul 1, 1920   106.46 million
Jul 1, 1919   104.51 million
Jul 1, 1918   103.21 million
Jul 1, 1917   103.27 million
Jul 1, 1916   101.96 million
Jul 1, 1915   100.55 million
Jul 1, 1914   99.11 million
Jul 1, 1913   97.22 million
Jul 1, 1912   95.33 million
Jul 1, 1911   93.86 million
Jul 1, 1910   92.41 million
Jul 1, 1909   90.49 million
Jul 1, 1908   88.71 million
Jul 1, 1907   87.01 million
Jul 1, 1906   85.45 million
Jul 1, 1905   83.82 million
Jul 1, 1904   82.17 million
Jul 1, 1903   80.63 million
Jul 1, 1902   79.16 million
Jul 1, 1901   77.58 million
Jul 1, 1900   76.09 million