Year | Value | 2021 | 29,403,732 | 2020 | 20,968,865.89 | 2019 | 46,181,487 | 2018 | 39,767,648 | 2017 | 37,503,000 | 2016 | 35,092,840 | 2015 | 33,431,736 | 2014 | 32,269,452 | 2013 | 28,252,104 | 2012 | 26,537,661 | 2011 | 23,135,735 | 2010 | 20,323,592 | 2009 | 17,508,200 | 2008 | 16,708,204 | 2007 | 17,141,188 | 2006 | 16,830,838 | 2005 | 15,933,045 | 2004 | 14,942,633 | 2003 | 13,821,729 | 2002 | 13,564,300 | 2001 | 12,835,735 | 2000 | 12,566,492 | 1999 | 12,328,500 | 1998 | 11,816,200 | 1997 | 11,738,200 | 1996 | 11,706,300 | 1995 | 11,524,200 | 1994 | 12,142,300 | 1993 | 11,864,300 | 1992 | 11,154,800 | 1991 | 9,409,100 | 1990 | 10,311,500 | 1989 | 9,988,000 | 1988 | 9,879,600 | 1987 | 10,258,400 | 1986 | 9,929,400 | 1985 | 10,795,100 | 1984 | 11,365,800 | 1983 | 10,670,300 | 1982 | 10,151,800 | 1981 | 9,146,900 | 1980 | 9,241,200 | 1979 | 7,689,200 | 1978 | 6,268,100 | 1977 | 4,705,100 | 1976 | 3,268,000 | 1975 | 1,835,700 | 1974 | 1,282,500 | 1973 | 968,300 | 1972 | 762,000 | 1971 | 513,600 | 1970 | 558,000 |
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