Year | Value | 2022 | 51,147 | 2021 | 52,253 | 2020 | 53,066 | 2019 | 52,829 | 2018 | 51,982 | 2017 | 50,896 | 2016 | 49,758 | 2015 | 48,492 | 2014 | 47,039 | 2013 | 45,634 | 2012 | 44,388 | 2011 | 43,266 | 2010 | 42,658 | 2009 | 42,675 | 2008 | 42,735 | 2007 | 42,511 | 2006 | 41,921 | 2005 | 41,022 | 2004 | 40,011 | 2003 | 39,059 | 2002 | 38,199 | 2001 | 37,418 | 2000 | 36,705 | 1999 | 36,043 | 1998 | 35,406 | 1997 | 34,761 | 1996 | 34,026 | 1995 | 33,163 | 1994 | 31,770 | 1993 | 30,211 | 1992 | 29,217 | 1991 | 28,397 | 1990 | 27,499 | 1989 | 26,650 | 1988 | 25,952 | 1987 | 25,636 | 1986 | 25,287 | 1985 | 24,668 | 1984 | 24,085 | 1983 | 23,431 | 1982 | 22,716 | 1981 | 22,015 | 1980 | 21,373 | 1979 | 20,667 | 1978 | 19,869 | 1977 | 19,130 | 1976 | 18,455 | 1975 | 17,854 | 1974 | 17,330 | 1973 | 16,861 | 1972 | 16,419 | 1971 | 15,974 | 1970 | 15,497 | 1969 | 15,006 | 1968 | 14,532 | 1967 | 14,095 | 1966 | 13,722 | 1965 | 13,434 | 1964 | 13,236 | 1963 | 13,109 | 1962 | 13,027 | 1961 | 12,976 | 1960 | 12,921 |
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