| Year | Value | | 2022 | 59,173 | | 2021 | 53,467 | | 2020 | 48,613 | | 2019 | 44,219 | | 2018 | 39,880 | | 2017 | 36,064 | | 2016 | 32,587 | | 2015 | 29,629 | | 2014 | 27,622 | | 2013 | 25,186 | | 2012 | 22,072 | | 2011 | 19,443 | | 2010 | 17,632 | | 2009 | 16,374 | | 2008 | 15,192 | | 2007 | 14,101 | | 2006 | 13,062 | | 2005 | 12,078 | | 2004 | 11,193 | | 2003 | 10,406 | | 2002 | 9,715 | | 2001 | 9,153 | | 2000 | 8,726 | | 1999 | 8,390 | | 1998 | 8,085 | | 1997 | 7,756 | | 1996 | 7,367 | | 1995 | 7,275 | | 1994 | 8,280 | | 1993 | 9,909 | | 1992 | 10,081 | | 1991 | 7,904 | | 1990 | 8,799 | | 1989 | 10,689 | | 1988 | 9,532 | | 1987 | 8,496 | | 1986 | 7,599 | | 1985 | 7,088 | | 1984 | 6,862 | | 1983 | 6,719 | | 1982 | 6,676 | | 1981 | 6,604 | | 1980 | 6,406 | | 1979 | 6,122 | | 1978 | 5,845 | | 1977 | 5,569 | | 1976 | 5,323 | | 1975 | 5,014 | | 1974 | 4,646 | | 1973 | 4,342 | | 1972 | 4,095 | | 1971 | 3,881 | | 1970 | 3,676 | | 1969 | 3,468 | | 1968 | 3,266 | | 1967 | 3,075 | | 1966 | 2,904 | | 1965 | 2,764 | | 1964 | 2,657 | | 1963 | 2,574 | | 1962 | 2,502 | | 1961 | 2,386 | | 1960 | 2,207 |
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