Year | Value | 2021 | 13,573.561381508 | 2020 | 11,158.461919436 | 2019 | 12,135.464075941 | 2018 | 12,419.433210341 | 2017 | 13,321.372346769 | 2016 | 12,994.595170871 | 2015 | 15,206.303439414 | 2014 | 14,561.500182611 | 2013 | 12,815.428286212 | 2012 | 11,256.770974156 | 2011 | 10,180.881972527 | 2010 | 10,913.956018714 | 2009 | 9,311.4600756966 | 2008 | 14,788.907780337 | 2007 | 11,096.852811086 | 2006 | 9,042.4581093668 | 2005 | 8,275.5770329299 | 2004 | 7,591.9895115636 | 2003 | 6,036.1661772066 | 2002 | 4,991.392842515 | 2001 | 4,967.9929195169 | 2000 | 4,347.7519996477 | 1999 | 3,819.7024188201 | 1998 | 3,549.6637555675 | 1997 | 3,148.9100830791 | 1996 | 3,001.1524164241 | 1995 | 2,977.6661256073 | 1994 | 2,706.679285188 | 1993 | 2,584.4349111113 | 1992 | 2,991.9672884064 | 1991 | 2,947.273231682 | 1990 | 2,608.9862742989 | 1989 | 2,242.3644340361 | 1988 | 2,606.2625882672 | 1987 | 2,612.2566908404 | 1986 | 2,984.0264750425 | 1985 | 4,524.9736203485 | 1984 | 4,994.7061203433 | 1983 | 5,292.5128336112 | 1982 | 5,837.3007714199 | 1981 | 4,022.9347025317 | 1980 | 3,412.5744214767 | 1979 | 2,388.1249819514 | 1978 | 2,418.4429012577 | 1977 | 1,980.9194493226 | 1976 | 1,513.0983842947 | 1975 | 1,588.3171637733 | 1974 | 1,082.606880819 | 1973 | 1,000.2118233024 | 1972 | 837.17471635047 | 1971 | 714.73231022696 | 1970 | 669.36618834533 |
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