Year | Value | 2021 | 2,567.4443205687 | 2020 | 2,305.8583448813 | 2019 | 2,186.7718939932 | 2018 | 1,869.9357425723 | 2017 | 1,712.1043100129 | 2016 | 1,580.7734198474 | 2015 | 1,194.1801073562 | 2014 | 1,068.9284974558 | 2013 | 949.5204786346 | 2012 | 853.69080005025 | 2011 | 826.61389800082 | 2010 | 749.6170876903 | 2009 | 672.11060248197 | 2008 | 605.30816884109 | 2007 | 523.44767787155 | 2006 | 472.39901698168 | 2005 | 461.19293360395 | 2004 | 437.77966361717 | 2003 | 408.63801097913 | 2002 | 376.71624017532 | 2001 | 373.94546249277 | 2000 | 377.27168192937 | 1999 | 368.63165463855 | 1998 | 365.67695058622 | 1997 | 359.97980311429 | 1996 | 351.68178507728 | 1995 | 294.0210625851 | 1994 | 266.83260080536 | 1993 | 265.91194584935 | 1992 | 257.98535655496 | 1991 | 256.33231362448 | 1990 | 266.21855016725 | 1989 | 248.09620585948 | 1988 | 233.85912180814 | 1987 | 218.97039036727 | 1986 | 199.84012821234 | 1985 | 209.01504612218 | 1984 | 183.77007274164 | 1983 | 175.43583918153 | 1982 | 186.96679572654 | 1981 | 210.18501305609 | 1980 | 189.43068567534 | 1979 | 165.97492040404 | 1978 | 143.32364808977 | 1977 | 105.72156774667 | 1976 | 115.91563408374 | 1975 | 229.55471781251 |
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