Year | Value | 2021 | 24,054,588.846 | 2020 | 20,098,778.5634 | 2019 | 38,082,933.010128 | 2018 | 37,405,640.248386 | 2017 | 36,299,460.058 | 2016 | 35,337,714 | 2015 | 34,030,586 | 2014 | 33,026,724.979077 | 2013 | 32,160,518.882172 | 2012 | 31,434,525.586079 | 2011 | 31,203,707.095182 | 2010 | 30,222,074.540528 | 2009 | 26,122,523 | 2008 | 25,498,093 | 2007 | 26,016,011 | 2006 | 24,829,383 | 2005 | 24,215,712 | 2004 | 23,752,616 | 2003 | 21,282,617 | 2002 | 20,817,389 | 2001 | 22,264,220 | 2000 | 22,008,658 | 1999 | 20,736,600.000977 | 1998 | 19,653,200 | 1997 | 19,546,600 | 1996 | 18,953,600 | 1995 | 18,008,200 | 1994 | 17,218,900 | 1993 | 15,986,200 | 1992 | 14,918,800 | 1991 | 14,360,900 | 1990 | 14,583,900 | 1989 | 14,021,100 | 1988 | 13,880,900 | 1987 | 13,244,800 | 1986 | 12,677,000 | 1985 | 11,897,900 | 1984 | 11,404,000 | 1983 | 10,758,700 | 1982 | 10,335,800 | 1981 | 10,270,100 | 1980 | 10,704,900 | 1979 | 10,653,400 | 1978 | 10,183,700 | 1977 | 9,915,900 | 1976 | 9,562,900 | 1975 | 9,244,700 | 1974 | 9,254,900 | 1973 | 9,764,900 | 1971 | 9,504,500 | 1970 | 9,448,300 |
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