| Year | Value | | 2021 | 4,965,360.963 | | 2020 | 15,893,988 | | 2019 | 63,623,130 | | 2018 | 60,481,772 | | 2017 | 58,711,937 | | 2016 | 53,817,353 | | 2015 | 50,345,820 | | 2014 | 49,673,884 | | 2013 | 47,995,842.00418 | | 2012 | 39,165,195.217678 | | 2011 | 38,218,608.852353 | | 2010 | 34,239,014.172521 | | 2009 | 23,766,316 | | 2008 | 22,420,870 | | 2007 | 21,325,754 | | 2006 | 17,833,364 | | 2005 | 20,369,086 | | 2004 | 19,226,564 | | 2003 | 16,704,600 | | 2002 | 16,281,275 | | 2001 | 16,107,156 | | 2000 | 16,560,793 | | 1999 | 14,984,600 | | 1998 | 13,654,400 | | 1997 | 15,591,600 | | 1996 | 15,117,600 | | 1995 | 15,417,800 | | 1994 | 14,249,800 | | 1993 | 13,101,300 | | 1992 | 12,756,900 | | 1991 | 11,837,400 | | 1990 | 10,241,500 | | 1989 | 8,694,600 | | 1988 | 7,683,600 | | 1987 | 7,396,100 | | 1986 | 6,310,500 | | 1985 | 5,687,000 | | 1984 | 5,685,400 | | 1983 | 5,360,900 | | 1982 | 5,241,700 | | 1981 | 5,347,700 | | 1980 | 4,516,400 | | 1979 | 3,489,500 | | 1978 | 3,096,000 | | 1977 | 2,864,700 | | 1976 | 2,671,000 | | 1975 | 2,503,600 | | 1974 | 2,331,900 | | 1973 | 1,864,400 | | 1972 | 1,015,600 | | 1971 | 875,100 | | 1970 | 748,900 |
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