Year | Value | 2022 | 32,493 | 2021 | 31,698 | 2020 | 30,724 | 2019 | 29,585 | 2018 | 28,443 | 2017 | 27,475 | 2016 | 26,798 | 2015 | 26,454 | 2014 | 26,486 | 2013 | 26,755 | 2012 | 27,012 | 2011 | 27,213 | 2010 | 27,400 | 2009 | 27,583 | 2008 | 27,795 | 2007 | 28,023 | 2006 | 28,049 | 2005 | 27,903 | 2004 | 27,748 | 2003 | 27,497 | 2002 | 27,117 | 2001 | 26,714 | 2000 | 26,242 | 1999 | 25,567 | 1998 | 24,712 | 1997 | 23,758 | 1996 | 22,704 | 1995 | 21,580 | 1994 | 20,711 | 1993 | 20,131 | 1992 | 19,624 | 1991 | 19,278 | 1990 | 19,068 | 1989 | 18,658 | 1988 | 18,112 | 1987 | 17,671 | 1986 | 17,188 | 1985 | 16,696 | 1984 | 16,312 | 1983 | 15,941 | 1982 | 15,531 | 1981 | 15,095 | 1980 | 14,651 | 1979 | 14,194 | 1978 | 13,723 | 1977 | 13,244 | 1976 | 12,819 | 1975 | 12,468 | 1974 | 12,134 | 1973 | 11,810 | 1972 | 11,492 | 1971 | 11,169 | 1970 | 10,843 | 1969 | 10,530 | 1968 | 10,235 | 1967 | 9,971 | 1966 | 9,721 | 1965 | 9,485 | 1964 | 9,283 | 1963 | 9,112 | 1962 | 8,959 | 1961 | 8,812 | 1960 | 8,666 |
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