Year | Value | 2021 | 359,705.738 | 2020 | 271,331 | 2019 | 457,722 | 2018 | 278,438.28855991 | 2017 | 21,038 | 2016 | 9,874 | 2015 | 115,355 | 2014 | 131,964 | 2013 | 219,996 | 2012 | 543,987.6 | 2011 | 391,401.4 | 2009 | 572,609 | 2008 | 567,101 | 2007 | 538,845 | 2006 | 500,677 | 2005 | 449,682 | 2004 | 416,372 | 2003 | 129,974 | 2002 | 231,333 | 2001 | 176,413 | 2000 | 97,525 | 1999 | 103,400 | 1998 | 121,400 | 1997 | 165,500 | 1996 | 155,100 | 1995 | 149,700 | 1994 | 141,200 | 1993 | 140,200 | 1992 | 138,300 | 1991 | 138,400 | 1990 | 148,300 | 1989 | 139,700 | 1988 | 135,400 | 1987 | 135,800 | 1986 | 144,100 | 1985 | 132,100 | 1984 | 126,300 | 1983 | 124,500 | 1982 | 118,300 | 1981 | 116,100 | 1980 | 113,100 | 1979 | 142,300 | 1978 | 137,200 | 1977 | 128,400 | 1976 | 120,400 | 1975 | 110,000 | 1974 | 102,500 | 1973 | 94,600 | 1972 | 88,900 | 1971 | 89,400 | 1970 | 85,100 |
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