| Year | Value | | 2021 | 3,676,185 | | 2020 | 2,686,258 | | 2019 | 10,225,516 | | 2018 | 9,277,538 | | 2017 | 7,376,512 | | 2016 | 5,497,163 | | 2015 | 4,448,883 | | 2014 | 5,038,745.4259833 | | 2013 | 5,002,975.7486676 | | 2012 | 4,909,100.3920691 | | 2011 | 4,448,727.0598285 | | 2010 | 4,099,082 | | 2009 | 4,279,072 | | 2008 | 4,634,676 | | 2007 | 4,269,655 | | 2006 | 3,625,982 | | 2005 | 3,553,680 | | 2004 | 3,493,094 | | 2003 | 3,252,222 | | 2002 | 2,845,919 | | 2001 | 2,670,283 | | 2000 | 2,340,919 | | 1999 | 2,140,700 | | 1998 | 2,212,500 | | 1997 | 1,998,000 | | 1996 | 1,805,900 | | 1995 | 1,657,300 | | 1994 | 1,451,800 | | 1993 | 1,269,900 | | 1992 | 1,102,100 | | 1991 | 1,051,200 | | 1990 | 1,501,000 | | 1989 | 1,907,300 | | 1988 | 1,600,200 | | 1987 | 1,569,500 | | 1986 | 1,573,500 | | 1985 | 1,587,000 | | 1984 | 1,595,900 | | 1983 | 1,287,000 | | 1982 | 755,500 | | 1981 | 1,592,800 | | 1980 | 1,710,500 | | 1979 | 1,850,400 | | 1978 | 1,702,300 | | 1977 | 1,643,200 | | 1976 | 1,472,400 | | 1975 | 1,454,500 | | 1974 | 1,086,800 | | 1973 | 1,491,000 | | 1972 | 1,267,000 | | 1971 | 1,031,200 | | 1970 | 904,000 |
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