| Year | Value | | 2014 | 4,662.6007998029 | | 2013 | 4,685.0547871127 | | 2012 | 4,736.351770887 | | 2011 | 4,848.2793372711 | | 2010 | 4,959.0943053598 | | 2009 | 4,843.8496942776 | | 2008 | 4,850.8374125571 | | 2007 | 4,890.5601878181 | | 2006 | 4,827.4671820425 | | 2005 | 4,682.9910133263 | | 2004 | 4,533.5396949654 | | 2003 | 4,375.7322168531 | | 2002 | 4,271.168527945 | | 2001 | 4,119.6704881208 | | 2000 | 3,988.9608235184 | | 1999 | 3,795.2292796473 | | 1998 | 3,545.0103521625 | | 1997 | 3,352.4658330907 | | 1996 | 3,195.8640473492 | | 1995 | 3,076.8460477853 | | 1994 | 2,870.8330309938 | | 1993 | 2,803.2023121677 | | 1992 | 2,815.8771057787 | | 1991 | 2,676.6436735679 | | 1990 | 2,541.8657591169 | | 1989 | 2,399.3003498251 | | 1988 | 2,201.7823049001 | | 1987 | 2,057.7204596875 | | 1986 | 1,974.5365520505 | | 1985 | 1,873.1768674629 | | 1984 | 1,774.2685443875 | | 1983 | 1,740.0316232445 | | 1982 | 1,644.7111217561 | | 1981 | 1,567.2959738968 | | 1980 | 1,558.5207599348 | | 1979 | 1,466.4746283225 | | 1978 | 1,343.6560039756 | | 1977 | 1,248.985397658 | | 1976 | 1,136.9405748941 | | 1975 | 1,075.8269395511 | | 1974 | 1,080.9464764149 | | 1973 | 994.77592058473 | | 1972 | 911.54206684951 | | 1971 | 835.2850311832 | | 1970 | 763.90216107933 | | 1969 | 681.11451573215 | | 1968 | 614.59942398986 | | 1967 | 572.42532553873 | | 1966 | 543.05289783104 | | 1965 | 486.85378106249 | | 1964 | 459.52764498169 | | 1963 | 409.83992323668 | | 1962 | 379.14228231424 | | 1961 | 350.19479655553 | | 1960 | 320.17283010654 |
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