Year | Value | 2021 | 1,084.983799328 | 2020 | 808.099933565 | 2019 | 982.65129546943 | 2018 | 999.26255462169 | 2017 | 1,073.5535995773 | 2016 | 789.17317832787 | 2015 | 785.41788039107 | 2014 | 843.67212220161 | 2013 | 804.68268035069 | 2012 | 752.67641724932 | 2011 | 758.31103689684 | 2010 | 882.81531087696 | 2009 | 652.522 | 2008 | 635.895 | 2007 | 795.717 | 2006 | 909.119 | 2005 | 895.03 | 2004 | 853.048 | 2003 | 817.547 | 2002 | 740.923 | 2001 | 798.506 | 2000 | 790.159 | 1999 | 804.9000023006 | 1998 | 807.3000066877 | 1997 | 845.0000045895 | 1996 | 801.3000038265 | 1995 | 784.0000180304 | 1994 | 736.4999998212 | 1993 | 632.1999977231 | 1992 | 622.1999938486 | 1991 | 674.900000669 | 1990 | 795.2000070587 | 1989 | 896.3000103013 | 1988 | 925.6000133157 | 1987 | 805.8000114561 | 1986 | 600.699997723 | 1985 | 712.9000081123 | 1984 | 946.9000062048 | 1983 | 1,016.299974501 | 1982 | 833.3999913334 | 1981 | 790.499994114 | 1980 | 790.5999725609 | 1979 | 840.3000213876 | 1978 | 777.2999994532 | 1977 | 767.7000083922 | 1976 | 751.7000049651 | 1975 | 585.699994281 | 1974 | 494.3999873177 | 1973 | 450.1000113264 | 1972 | 324.6000045314 | 1971 | 246.2000027671 | 1970 | 180.900006391 |
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