Year | Value | 2021 | 3,234.2118221423 | 2020 | 3,015.9430281361 | 2019 | 2,476.5113689191 | 2018 | 2,082.0579003587 | 2017 | 2,037.31980021 | 2016 | 3,012.2654095164 | 2015 | 3,040.4733822039 | 2014 | 2,758.8109677541 | 2013 | 2,637.7904160897 | 2012 | 2,604.9116322804 | 2011 | 2,193.8567340599 | 2010 | 2,135.9533061398 | 2009 | 1,927.7926488279 | 2008 | 1,619.8354501242 | 2007 | 1,354.2483526623 | 2006 | 1,122.8792715919 | 2005 | 948.85456665478 | 2004 | 873.21989574687 | 2003 | 930.17282377801 | 2002 | 1,026.3569017269 | 2001 | 1,214.7653127995 | 2000 | 1,241.8443771798 | 1999 | 1,156.250961804 | 1998 | 1,135.1621781877 | 1997 | 1,042.2886387635 | 1996 | 895.20710510998 | 1995 | 818.70234686671 | 1994 | 720.07833577268 | 1993 | 648.84021136125 | 1992 | 588.95655932513 | 1991 | 536.97739105979 | 1990 | 576.53403119268 | 1989 | 577.99313030524 | 1988 | 541.53709877498 | 1987 | 638.52140564748 | 1986 | 633.67747418073 | 1985 | 556.39113645222 | 1984 | 506.20808047985 | 1983 | 478.46377155352 | 1982 | 432.87064805311 | 1981 | 328.45126998779 | 1980 | 313.74076870562 | 1979 | 284.58879061658 | 1978 | 287.94251017074 | 1977 | 299.98283836121 | 1976 | 294.45039003473 | 1975 | 271.37065745652 | 1974 | 225.78872497847 | 1973 | 258.25900399316 | 1972 | 244.21664428058 | 1971 | 230.29296112941 | 1970 | 220.1743423366 |
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