| Year | Value | | 2022 | 393,817 | | 2021 | 380,701 | | 2020 | 362,140 | | 2019 | 347,362 | | 2018 | 336,441 | | 2017 | 324,310 | | 2016 | 309,909 | | 2015 | 292,861 | | 2014 | 273,390 | | 2013 | 252,172 | | 2012 | 229,982 | | 2011 | 207,462 | | 2010 | 185,037 | | 2009 | 163,270 | | 2008 | 144,241 | | 2007 | 129,583 | | 2006 | 118,778 | | 2005 | 110,599 | | 2004 | 102,847 | | 2003 | 95,174 | | 2002 | 88,636 | | 2001 | 83,204 | | 2000 | 78,934 | | 1999 | 75,798 | | 1998 | 73,554 | | 1997 | 71,792 | | 1996 | 69,954 | | 1995 | 66,257 | | 1994 | 60,756 | | 1993 | 55,201 | | 1992 | 49,974 | | 1991 | 45,377 | | 1990 | 41,642 | | 1989 | 38,746 | | 1988 | 36,417 | | 1987 | 34,350 | | 1986 | 32,270 | | 1985 | 29,219 | | 1984 | 25,446 | | 1983 | 22,242 | | 1982 | 19,848 | | 1981 | 18,183 | | 1980 | 16,302 | | 1979 | 14,055 | | 1978 | 12,244 | | 1977 | 10,990 | | 1976 | 10,200 | | 1975 | 9,432 | | 1974 | 8,462 | | 1973 | 7,478 | | 1972 | 6,580 | | 1971 | 5,827 | | 1970 | 5,235 | | 1969 | 4,770 | | 1968 | 4,389 | | 1967 | 4,083 | | 1966 | 3,828 | | 1965 | 3,596 | | 1964 | 3,384 | | 1963 | 3,188 | | 1962 | 3,011 | | 1961 | 2,848 | | 1960 | 2,697 |
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