Year | Value | 2021 | 54,426.208423389 | 2020 | 44,891.513410119 | 2019 | 59,718.103467159 | 2018 | 58,278.332148991 | 2017 | 54,216.110356835 | 2016 | 47,484.018663161 | 2015 | 44,657.987117037 | 2014 | 42,779.776037083 | 2013 | 39,868.910586691 | 2012 | 38,077.667504182 | 2011 | 38,563.905994623 | 2010 | 38,550.383540563 | 2009 | 30,890.204 | 2008 | 28,551.282 | 2007 | 27,186.3 | 2006 | 24,302.102 | 2005 | 23,197.829 | 2004 | 22,314.508 | 2003 | 18,959.648 | 2002 | 17,593.916 | 2001 | 16,663.790000095 | 2000 | 17,135.57 | 1999 | 15,216.999901965 | 1998 | 14,228.499870993 | 1997 | 14,591.700107999 | 1996 | 12,883.299989588 | 1995 | 12,572.200077288 | 1994 | 11,962.599903263 | 1993 | 10,533.300066851 | 1992 | 9,069.8000879505 | 1991 | 8,253.5999422222 | 1990 | 8,120.8000622686 | 1989 | 7,815.8000223413 | 1988 | 7,623.599975027 | 1987 | 7,128.7000290903 | 1986 | 6,247.6000571402 | 1985 | 6,001.3000336961 | 1984 | 6,039.900049061 | 1983 | 5,382.7999580202 | 1982 | 4,977.3000333011 | 1981 | 4,675.2000088171 | 1980 | 4,196.9999758674 | 1979 | 3,862.20003254 | 1978 | 3,582.100000337 | 1977 | 3,199.9999900761 | 1976 | 2,964.1000314955 | 1975 | 2,533.9999953813 | 1974 | 2,188.2999984322 |
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