| Year | Value | | 2021 | 157,293 | | 2020 | 386,950 | | 2019 | 979,307 | | 2018 | 1,009,414 | | 2017 | 1,196,041 | | 2016 | 1,220,201 | | 2015 | 1,181,188 | | 2014 | 1,310,124 | | 2013 | 1,476,528 | | 2012 | 877,949.88137226 | | 2011 | 532,707 | | 2010 | 443,778 | | 2009 | 302,596 | | 2008 | 323,401 | | 2007 | 328,326 | | 2006 | 326,730 | | 2005 | 293,442 | | 2004 | 271,706 | | 2003 | 218,652 | | 2002 | 219,598 | | 2001 | 210,847 | | 2000 | 210,847 | | 1999 | 197,200 | | 1998 | 124,100 | | 1997 | 124,500 | | 1996 | 124,500 | | 1995 | 124,500 | | 1994 | 118,500 | | 1993 | 118,500 | | 1992 | 118,500 | | 1991 | 115,400 | | 1990 | 115,400 | | 1989 | 49,600 | | 1988 | 47,500 | | 1987 | 45,000 | | 1986 | 24,500 | | 1985 | 15,800 | | 1984 | 15,700 | | 1983 | 14,000 | | 1982 | 14,700 | | 1981 | 14,500 | | 1980 | 13,000 | | 1979 | 13,000 | | 1978 | 12,000 | | 1977 | 30,000 | | 1976 | 45,000 | | 1975 | 45,000 | | 1974 | 45,000 | | 1973 | 44,500 | | 1972 | 43,000 | | 1971 | 42,000 | | 1970 | 55,900 |
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