Year | Value | 2021 | 25,118.453138172 | 2020 | 22,321.683938039 | 2019 | 25,125.871722228 | 2018 | 25,791.535566411 | 2017 | 23,874.662002754 | 2016 | 22,489.733444433 | 2015 | 21,716.487974811 | 2014 | 24,700.290104026 | 2013 | 24,246.78076588 | 2012 | 23,566.205088224 | 2011 | 26,212.695890264 | 2010 | 25,486.321008457 | 2009 | 26,838.526036754 | 2008 | 29,598.610598101 | 2007 | 27,377.478343633 | 2006 | 24,030.413913643 | 2005 | 22,509.893107204 | 2004 | 21,375.525536023 | 2003 | 18,547.588430807 | 2002 | 14,726.439718168 | 2001 | 13,213.926296618 | 2000 | 12,777.724468747 | 1999 | 13,617.518530675 | 1998 | 13,323.801233832 | 1997 | 12,723.866037773 | 1996 | 13,900.048613788 | 1995 | 13,448.340873001 | 1994 | 11,476.813920656 | 1993 | 11,586.470606583 | 1992 | 14,016.85258871 | 1991 | 12,890.713403728 | 1990 | 11,991.830951846 | 1989 | 9,260.5302222768 | 1988 | 8,351.2477053032 | 1987 | 7,101.9755434767 | 1986 | 5,586.6815184381 | 1985 | 3,983.1291500582 | 1984 | 3,773.0724013158 | 1983 | 3,769.3409019034 | 1982 | 4,378.8223432177 | 1981 | 4,573.3424713774 | 1980 | 5,364.9581093096 | 1979 | 5,025.9214753061 | 1978 | 3,806.5749059923 | 1977 | 3,168.4895124616 | 1976 | 2,866.9057536008 | 1975 | 2,816.3831178399 | 1974 | 2,433.7848791889 | 1973 | 1,990.8438873413 | 1972 | 1,505.1881796221 | 1971 | 1,189.4975460729 | 1970 | 1,055.2021734085 |
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