Year | Value | 2021 | 1,446.8592291306 | 2020 | 1,392.5240514344 | 2019 | 1,395.6725216189 | 2018 | 1,412.1160792455 | 2017 | 1,290.3155349119 | 2016 | 1,234.02163151 | 2015 | 1,200.9197968441 | 2014 | 1,466.3858347741 | 2013 | 1,452.2730545085 | 2012 | 1,348.8917870655 | 2011 | 1,395.2572409594 | 2010 | 1,269.6944166597 | 2009 | 1,299.1182707984 | 2008 | 1,338.7701410451 | 2007 | 1,190.1535869543 | 2006 | 1,071.1944969661 | 2005 | 1,021.1916879173 | 2004 | 1,005.6110556025 | 2003 | 881.34011630852 | 2002 | 702.65800131634 | 2001 | 639.9791486437 | 2000 | 604.35521618675 | 1999 | 668.12277928347 | 1998 | 654.57302812096 | 1997 | 660.15618174036 | 1996 | 733.60674652177 | 1995 | 755.59331740291 | 1994 | 628.82676680264 | 1993 | 918.71527451779 | 1992 | 952.57012266168 | 1991 | 897.86511013573 | 1990 | 931.87733531408 | 1989 | 766.8286142984 | 1988 | 814.17028730083 | 1987 | 795.33978720225 | 1986 | 672.05473099408 | 1985 | 486.41368384861 | 1984 | 474.12951657673 | 1983 | 503.43139680744 | 1982 | 496.44900615406 | 1981 | 546.35307525961 | 1980 | 608.6082878426 |
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