Year | Value | 2021 | 4,016.917568494 | 2020 | 3,173.7162314102 | 2019 | 2,843.7925363907 | 2018 | 2,379.8323476191 | 2017 | 2,357.2887635566 | 2016 | 1,754.5416100018 | 2015 | 1,511.2321650469 | 2014 | 1,476.0818793199 | 2013 | 1,396.9073637497 | 2012 | 1,198.8140642814 | 2011 | 968.71558372102 | 2010 | 850.87077473205 | 2009 | 626.869 | 2008 | 536.944 | 2007 | 496.666 | 2006 | 631.655 | 2005 | 568.549 | 2004 | 532.763 | 2003 | 473.576 | 2002 | 439.176 | 2001 | 491.49100009537 | 2000 | 584.58 | 1999 | 541.3000050487 | 1998 | 519.2000007332 | 1997 | 633.4999989643 | 1996 | 562.0999955906 | 1995 | 582.4999983235 | 1994 | 611.4000049753 | 1993 | 423.000000328 | 1992 | 479.4999971092 | 1991 | 499.9000060857 | 1990 | 531.4000039696 | 1989 | 589.0999969616 | 1988 | 536.9999938532 | 1987 | 522.6999986845 | 1986 | 466.7000079826 | 1985 | 478.0000041425 | 1984 | 425.2999944464 | 1983 | 400.4999992922 | 1982 | 395.099999018 | 1981 | 395.0000020491 | 1980 | 375.2000016945 | 1979 | 388.5000028986 | 1978 | 298.6000006275 | 1977 | 282.1000003443 | 1976 | 276.2000016871 | 1975 | 230.2000004801 | 1974 | 209.3000028652 | 1973 | 158.3000026642 |
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