Year | Value | 2022 | 56,967 | 2021 | 56,374 | 2020 | 55,629 | 2019 | 54,844 | 2018 | 54,138 | 2017 | 53,462 | 2016 | 52,566 | 2015 | 51,526 | 2014 | 50,530 | 2013 | 49,477 | 2012 | 48,366 | 2011 | 47,291 | 2010 | 46,198 | 2009 | 44,939 | 2008 | 43,564 | 2007 | 42,100 | 2006 | 40,547 | 2005 | 38,920 | 2004 | 37,500 | 2003 | 36,326 | 2002 | 35,203 | 2001 | 34,191 | 2000 | 33,290 | 1999 | 32,174 | 1998 | 30,899 | 1997 | 29,758 | 1996 | 28,845 | 1995 | 28,217 | 1994 | 27,840 | 1993 | 27,572 | 1992 | 27,301 | 1991 | 26,980 | 1990 | 26,572 | 1989 | 26,092 | 1988 | 25,628 | 1987 | 25,201 | 1986 | 24,676 | 1985 | 24,082 | 1984 | 23,550 | 1983 | 23,069 | 1982 | 22,603 | 1981 | 22,077 | 1980 | 21,502 | 1979 | 20,926 | 1978 | 20,373 | 1977 | 19,843 | 1976 | 19,385 | 1975 | 18,996 | 1974 | 18,659 | 1973 | 18,374 | 1972 | 18,102 | 1971 | 17,789 | 1970 | 17,418 | 1969 | 16,978 | 1968 | 16,516 | 1967 | 16,040 | 1966 | 15,541 | 1965 | 15,029 | 1964 | 14,524 | 1963 | 14,020 | 1962 | 13,537 | 1961 | 13,091 | 1960 | 12,671 |
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