| Year | Value | | 2022 | 300,926 | | 2021 | 285,430 | | 2020 | 265,714 | | 2019 | 247,621 | | 2018 | 230,702 | | 2017 | 212,585 | | 2016 | 194,000 | | 2015 | 175,489 | | 2014 | 157,329 | | 2013 | 139,514 | | 2012 | 122,009 | | 2011 | 104,936 | | 2010 | 88,594 | | 2009 | 78,143 | | 2008 | 75,506 | | 2007 | 76,197 | | 2006 | 77,279 | | 2005 | 76,138 | | 2004 | 72,357 | | 2003 | 68,125 | | 2002 | 64,786 | | 2001 | 61,964 | | 2000 | 59,168 | | 1999 | 56,008 | | 1998 | 52,342 | | 1997 | 48,259 | | 1996 | 44,079 | | 1995 | 40,063 | | 1994 | 36,626 | | 1993 | 33,973 | | 1992 | 31,775 | | 1991 | 29,721 | | 1990 | 27,548 | | 1989 | 25,166 | | 1988 | 22,672 | | 1987 | 20,231 | | 1986 | 18,031 | | 1985 | 16,237 | | 1984 | 14,888 | | 1983 | 13,786 | | 1982 | 12,659 | | 1981 | 11,417 | | 1980 | 10,239 | | 1979 | 9,314 | | 1978 | 8,544 | | 1977 | 7,771 | | 1976 | 6,938 | | 1975 | 6,146 | | 1974 | 5,520 | | 1973 | 5,057 | | 1972 | 4,699 | | 1971 | 4,393 | | 1970 | 4,095 | | 1969 | 3,763 | | 1968 | 3,398 | | 1967 | 3,114 | | 1966 | 2,925 | | 1965 | 2,749 | | 1964 | 2,593 | | 1963 | 2,458 | | 1962 | 2,338 | | 1961 | 2,236 | | 1960 | 2,146 |
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