Year | Value | 2021 | 15,547,481.59 | 2020 | 11,959,213.591 | 2019 | 29,093,297.794951 | 2018 | 28,749,421.057539 | 2017 | 24,353,773 | 2016 | 25,950,100 | 2015 | 24,997,482 | 2014 | 24,165,927.343339 | 2013 | 24,098,238.087732 | 2012 | 24,663,522.391796 | 2011 | 23,867,830.734422 | 2010 | 20,774,321.429166 | 2009 | 14,965,530 | 2008 | 15,375,119 | 2007 | 14,980,619 | 2006 | 14,641,094 | 2005 | 13,181,865 | 2004 | 11,971,594 | 2003 | 10,669,835 | 2002 | 10,439,111 | 2001 | 12,976,878 | 2000 | 12,058,275 | 1999 | 12,221,200 | 1998 | 11,596,400 | 1997 | 11,784,100 | 1996 | 10,788,200 | 1995 | 11,674,500 | 1994 | 12,197,100 | 1993 | 11,732,700 | 1992 | 13,830,900 | 1991 | 9,634,000 | 1990 | 9,605,300 | 1989 | 9,437,900 | 1988 | 9,376,900 | 1987 | 9,227,600 | 1986 | 9,379,300 | 1985 | 9,542,000 | 1984 | 8,575,100 | 1983 | 8,386,100 | 1982 | 8,093,800 | 1981 | 7,956,400 | 1980 | 7,325,200 | 1979 | 6,194,900 | 1978 | 5,827,800 | 1977 | 4,867,000 | 1976 | 4,343,400 | 1975 | 3,366,700 | 1974 | 2,448,700 | 1973 | 2,327,100 | 1972 | 1,628,700 | 1971 | 1,959,100 | 1970 | 2,069,400 |
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