Year | Value | 2021 | 8,056,494.578 | 2020 | 6,219,531.061 | 2019 | 22,047,878.978 | 2018 | 17,367,956 | 2017 | 15,937,325 | 2016 | 13,105,120 | 2015 | 12,706,909 | 2014 | 12,635,439 | 2013 | 11,860,998 | 2012 | 11,338,080 | 2011 | 11,014,639 | 2010 | 10,428,173.512674 | 2009 | 9,903,771 | 2008 | 11,171,020 | 2007 | 10,320,040 | 2006 | 9,440,930 | 2005 | 10,139,655 | 2004 | 9,052,471 | 2003 | 7,590,259 | 2002 | 6,795,580 | 2001 | 6,650,492 | 2000 | 6,721,365 | 1999 | 7,339,300 | 1998 | 7,023,100 | 1997 | 6,281,400 | 1996 | 4,805,500 | 1995 | 4,590,100 | 1994 | 4,359,600 | 1993 | 4,378,900 | 1992 | 4,108,800 | 1991 | 3,571,800 | 1990 | 3,504,500 | 1989 | 3,187,300 | 1988 | 3,025,100 | 1987 | 2,785,600 | 1986 | 2,422,600 | 1985 | 2,315,200 | 1984 | 2,311,800 | 1983 | 2,218,400 | 1982 | 2,272,200 | 1981 | 2,168,500 | 1980 | 1,978,100 | 1979 | 2,264,500 | 1978 | 2,014,400 | 1977 | 1,833,400 | 1976 | 1,650,300 | 1975 | 1,681,300 | 1974 | 2,250,400 | 1973 | 2,247,100 | 1972 | 1,949,800 | 1971 | 1,656,100 | 1970 | 1,415,400 |
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