Year | Value | 2021 | 1,605.222381 | 2020 | 1,496.604491452 | 2019 | 1,547.674684 | 2018 | 1,350.008974 | 2017 | 1,273.568638 | 2016 | 1,142.854709203 | 2015 | 1,316.795809466 | 2014 | 1,315.4039563194 | 2013 | 1,222.156867189 | 2012 | 918.32409159166 | 2011 | 968.1603584668 | 2010 | 954.66013894833 | 2009 | 2,419.933 | 2008 | 1,099.545 | 2007 | 1,070.449 | 2006 | 1,051.293 | 2005 | 1,092.492 | 2004 | 1,113.899 | 2003 | 645.778 | 2002 | 538.757 | 2001 | 610.878 | 2000 | 600.616 | 1999 | 636.9000244141 | 1998 | 790.200012207 | 1997 | 812 | 1996 | 311.200012207 | 1995 | 498.3999938965 | 1994 | 565.799987793 | 1993 | 492.1000061035 | 1992 | 527.799987793 | 1991 | 526.0999755859 | 1990 | 463.700012207 | 1989 | 395.299987793 | 1988 | 403.299987793 | 1987 | 398.299987793 | 1986 | 391.6000061035 | 1985 | 375.700012207 | 1984 | 381.200012207 | 1983 | 292.5 | 1982 | 307.200012207 | 1981 | 204 | 1980 | 147.3999938965 | 1979 | 183.1000061035 | 1978 | 206.3999938965 | 1977 | 171.8999938965 | 1976 | 149.6000061035 | 1975 | 121.9000015259 | 1974 | 120 | 1973 | 104.4000015259 | 1972 | 86.3000030518 | 1971 | 81.5999984741 | 1970 | 74.6999969482 |
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