Year | Value | 2021 | 3,676.3495722672 | 2020 | 3,178.7371109627 | 2019 | 3,535.0636037592 | 2018 | 3,395.9088962016 | 2017 | 3,301.2944874266 | 2016 | 3,240.6044950898 | 2015 | 3,181.5782418768 | 2014 | 3,088.3669369848 | 2013 | 3,028.6663048438 | 2012 | 3,010.0341747933 | 2011 | 2,931.9546736824 | 2010 | 2,646.6778227432 | 2009 | 2,522.4383893067 | 2008 | 2,625.7044863013 | 2007 | 2,504.0997441193 | 2006 | 2,369.9368434258 | 2005 | 2,178.9918611145 | 2004 | 2,032.689768293 | 2003 | 1,978.7797760533 | 2002 | 1,915.4980574564 | 2001 | 1,875.4715858263 | 2000 | 1,820.3283575138 | 1999 | 1,750.8274477705 | 1998 | 1,733.9140802466 | 1997 | 1,632.314054284 | 1996 | 1,551.9277932949 | 1995 | 1,459.9485798675 | 1994 | 1,267.3773612863 | 1993 | 1,110.3554027586 | 1992 | 971.90821257469 | 1991 | 882.18889895123 | 1990 | 823.98144462291 | 1989 | 771.88298996623 | 1988 | 753.3569052817 | 1987 | 725.22769864143 | 1986 | 703.79184638941 | 1985 | 721.97561263575 | 1984 | 703.51792016153 | 1983 | 683.56433737338 | 1982 | 665.34103181769 | 1981 | 693.65611965264 | 1980 | 731.82225451026 | 1979 | 732.31952479996 | 1978 | 671.05154542667 | 1977 | 651.94737611354 | 1976 | 528.77915989757 | 1975 | 426.92532368205 | 1974 | 387.13693977526 | 1973 | 346.73799123984 | 1972 | 311.59695490472 | 1971 | 299.47172148919 |
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