Year | Value | 2021 | 14,404,471.136 | 2020 | 11,556,778.698 | 2019 | 23,040,760.588128 | 2018 | 22,651,321.208355 | 2017 | 22,383,177.92 | 2016 | 22,229,772 | 2015 | 21,637,313 | 2014 | 21,285,697.907024 | 2013 | 21,279,636.973863 | 2012 | 21,273,690.967188 | 2011 | 21,573,731.189451 | 2010 | 21,305,345.547364 | 2009 | 19,004,583 | 2008 | 18,771,667 | 2007 | 19,388,111 | 2006 | 18,807,308 | 2005 | 18,689,222 | 2004 | 18,533,738 | 2003 | 16,719,866 | 2002 | 16,164,673 | 2001 | 17,477,917 | 2000 | 17,684,797 | 1999 | 16,380,200.000977 | 1998 | 15,430,800 | 1997 | 15,302,500 | 1996 | 14,835,600 | 1995 | 14,016,500 | 1994 | 13,270,400 | 1993 | 12,139,700 | 1992 | 12,035,300 | 1991 | 11,642,500 | 1990 | 11,849,900 | 1989 | 11,345,400 | 1988 | 11,220,500 | 1987 | 10,649,900 | 1986 | 10,177,900 | 1985 | 9,440,100 | 1984 | 8,940,100 | 1983 | 8,435,300 | 1982 | 8,167,200 | 1981 | 8,198,900 | 1980 | 8,653,900 | 1979 | 8,688,700 | 1978 | 8,370,700 | 1977 | 8,157,900 | 1976 | 7,787,500 | 1975 | 7,573,100 | 1974 | 7,706,900 | 1973 | 8,272,400 | 1972 | 8,147,300 | 1971 | 8,164,300 | 1970 | 8,021,000 |
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