Year | Value | 2021 | 287,163 | 2020 | 254,341 | 2019 | 549,454 | 2018 | 527,807 | 2017 | 499,093.92 | 2016 | 473,606 | 2015 | 448,037 | 2014 | 368,132 | 2013 | 360,356 | 2012 | 285,000 | 2011 | 282,239 | 2010 | 280,427 | 2009 | 256,160 | 2008 | 250,260 | 2007 | 243,113 | 2006 | 223,735 | 2005 | 221,424 | 2004 | 232,077 | 2003 | 240,942 | 2002 | 238,649 | 2001 | 228,442 | 2000 | 226,910 | 1999 | 204,000 | 1998 | 207,900 | 1997 | 229,300 | 1996 | 207,300 | 1995 | 188,900 | 1994 | 170,300 | 1993 | 163,500 | 1992 | 141,000 | 1991 | 120,100 | 1990 | 120,100 | 1989 | 143,600 | 1988 | 69,200 | 1987 | 59,100 | 1986 | 53,100 | 1985 | 49,100 | 1984 | 47,900 | 1983 | 41,700 | 1982 | 38,900 | 1981 | 34,900 | 1980 | 37,100 | 1979 | 39,800 | 1978 | 34,000 | 1977 | 30,300 | 1976 | 27,500 | 1975 | 29,400 | 1974 | 33,100 | 1973 | 39,700 | 1972 | 39,100 | 1971 | 38,100 | 1970 | 16,000 |
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