Year | Value | 2021 | 654.94105659556 | 2020 | 637.25757921037 | 2019 | 625.55830051749 | 2018 | 613.39308185086 | 2017 | 589.84194715892 | 2016 | 569.64443185537 | 2015 | 658.84831143568 | 2014 | 669.11160877592 | 2013 | 595.70824475551 | 2012 | 569.67290922862 | 2011 | 640.85563679692 | 2010 | 654.08654649797 | 2009 | 637.09265902701 | 2008 | 348.64848882638 | 2007 | 300.51401297613 | 2006 | 269.46879605343 | 2005 | 254.14535536802 | 2004 | 221.52768760839 | 2003 | 177.52133156931 | 2002 | 187.30655277462 | 2001 | 184.59053014323 | 2000 | 206.05921492236 | 1999 | 208.78352090964 | 1998 | 224.63247703607 | 1997 | 219.11394439378 | 1996 | 211.1184858781 | 1995 | 204.58343315887 | 1994 | 146.20476745438 | 1993 | 118.32335198066 | 1992 | 97.377218857572 | 1991 | 127.82693389307 | 1990 | 183.16857380133 | 1989 | 250.27220474132 | 1988 | 328.66258532625 | 1987 | 327.74658309404 | 1986 | 196.7732128108 | 1985 | 189.57159457313 | 1984 | 195.22784444551 | 1983 | 109.94733775583 | 1982 | 92.415086967549 | 1981 | 51.854407881592 | 1980 | 41.46059312595 |
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