Year | Value | 2021 | 234,612 | 2020 | 185,260 | 2019 | 426,157.272 | 2018 | 455,956 | 2017 | 459,137 | 2016 | 463,947 | 2015 | 437,638 | 2014 | 352,224 | 2013 | 327,076 | 2012 | 311,758 | 2011 | 269,521 | 2010 | 240,855.107016 | 2009 | 170,588 | 2004 | 87,217 | 2003 | 71,224 | 2002 | 54,952 | 2001 | 50,783 | 2000 | 48,330 | 1999 | 44,400 | 1998 | 41,100 | 1997 | 39,000 | 1996 | 38,000 | 1995 | 34,200 | 1994 | 34,000 | 1993 | 30,100 | 1992 | 26,300 | 1991 | 19,400 | 1990 | 18,800 | 1989 | 16,000 | 1988 | 15,100 | 1987 | 12,800 | 1986 | 12,200 | 1985 | 10,500 | 1984 | 10,100 | 1983 | 9,500 | 1982 | 8,700 | 1981 | 10,000 | 1980 | 9,500 | 1979 | 8,300 | 1978 | 7,200 | 1977 | 6,300 | 1976 | 6,200 | 1975 | 5,400 | 1974 | 4,700 |
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