Year | Value | 2014 | 3,093.1737891335 | 2013 | 3,008.7129345377 | 2012 | 2,953.3097626228 | 2011 | 2,828.383909387 | 2010 | 2,821.3494336273 | 2009 | 2,674.5163802167 | 2008 | 2,597.623710855 | 2007 | 2,421.4013424658 | 2006 | 2,226.7826752816 | 2005 | 2,004.4217845985 | 2004 | 1,934.9381571193 | 2003 | 1,893.2379353284 | 2002 | 2,010.6210877496 | 2001 | 2,016.0929965686 | 2000 | 2,048.1595419996 | 1999 | 1,932.3182359789 | 1998 | 1,823.039504604 | 1997 | 1,745.4174318019 | 1996 | 1,646.6080896092 | 1995 | 1,586.1982981641 | 1994 | 1,491.8752517677 | 1993 | 1,457.5563561659 | 1992 | 1,366.3177467204 | 1991 | 1,343.3804069307 | 1990 | 1,241.5736609291 | 1989 | 1,202.7545209012 | 1988 | 1,249.6101060512 | 1987 | 1,156.0138054726 | 1986 | 1,102.5235063075 | 1985 | 1,067.0527058565 | 1984 | 1,035.8164450819 | 1983 | 1,031.976574232 | 1982 | 1,029.1415563064 | 1981 | 1,026.2717475884 | 1980 | 990.94371561574 | 1979 | 919.83994444915 | 1978 | 902.98854346102 | 1977 | 831.46377151829 | 1976 | 792.4335908829 | 1975 | 751.05842830665 | 1974 | 695.61548478617 | 1973 | 701.48845980982 | 1972 | 695.83132169668 | 1971 | 735.34339074929 |
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