Year | Value | 2021 | 8,305.7968810749 | 2020 | 7,366.7785573022 | 2019 | 8,585.7323222277 | 2018 | 8,439.0924222248 | 2017 | 8,409.5189329885 | 2016 | 8,086.8737108168 | 2015 | 8,866.6903635587 | 2014 | 8,566.8068364025 | 2013 | 8,121.2866574477 | 2012 | 7,833.9831851875 | 2011 | 7,300.2559631891 | 2010 | 7,364.3652726379 | 2009 | 6,856.4114117424 | 2008 | 8,297.2651428045 | 2007 | 7,286.8386212738 | 2006 | 6,512.778425003 | 2005 | 5,855.1978358636 | 2004 | 5,388.724588852 | 2003 | 4,873.0981272945 | 2002 | 4,660.9963757193 | 2001 | 4,479.8557591993 | 2000 | 4,353.2051444201 | 1999 | 4,159.0842586682 | 1998 | 4,008.8778618434 | 1997 | 3,729.6997013796 | 1996 | 3,274.7077253 | 1995 | 2,985.1543213114 | 1994 | 2,609.9713089814 | 1993 | 2,547.5107363091 | 1992 | 2,302.4121670914 | 1991 | 2,325.6192584725 | 1990 | 2,333.6936704242 | 1989 | 2,212.9143175909 | 1988 | 2,216.2179443909 | 1987 | 2,035.8365249831 | 1986 | 1,970.3038067394 | 1985 | 2,175.4358505553 | 1984 | 2,286.0918143202 | 1983 | 2,544.330517163 | 1982 | 2,577.8570856741 | 1981 | 2,082.171401288 | 1980 | 1,840.1811362803 |
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