Year | Value | 2021 | 77,781.175704672 | 2020 | 66,535.389548076 | 2019 | 62,146.077047776 | 2018 | 69,498.273764305 | 2017 | 66,052.638053148 | 2016 | 58,461.79988561 | 2015 | 55,729.104156858 | 2014 | 75,837.978483863 | 2013 | 72,403.40850548 | 2012 | 73,525.228601322 | 2011 | 68,844.401654127 | 2010 | 63,207.694581413 | 2009 | 57,334.184132884 | 2008 | 82,579.177583506 | 2007 | 81,562.14558327 | 2006 | 64,252.392582907 | 2005 | 66,045.155219447 | 2004 | 61,572.538384434 | 2003 | 46,904.255720779 | 2002 | 39,425.744467271 | 2001 | 37,797.451967634 | 2000 | 37,783.662671124 | 1999 | 41,453.674411348 | 1998 | 39,106.573534801 | 1997 | 39,892.734063114 | 1996 | 43,245.503152544 | 1995 | 43,847.265428929 | 1994 | 36,483.014865797 | 1993 | 34,641.017935881 | 1992 | 34,716.588208265 | 1991 | 31,763.612863575 | 1990 | 29,362.461713885 | 1989 | 22,977.079993298 | 1988 | 21,960.274447478 | 1987 | 19,846.299532032 | 1986 | 15,916.413958493 | 1985 | 11,177.26245343 | 1984 | 10,766.980626439 | 1983 | 11,156.791005406 | 1982 | 11,053.261366705 | 1981 | 10,849.067030373 | 1980 | 12,386.036048692 | 1979 | 11,165.711244158 | 1978 | 9,649.6683834979 | 1977 | 7,720.0742401836 | 1976 | 6,775.8591126413 | 1975 | 5,831.3497747736 | 1974 | 5,638.3553816406 | 1973 | 4,464.6590529006 | 1972 | 3,359.5859029534 | 1971 | 2,606.9549086991 | 1970 | 2,560.0379847063 |
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