Year | Value | 2022 | 52,015 | 2021 | 48,806 | 2020 | 45,759 | 2019 | 42,827 | 2018 | 40,004 | 2017 | 37,501 | 2016 | 35,296 | 2015 | 33,408 | 2014 | 31,834 | 2013 | 30,525 | 2012 | 29,391 | 2011 | 28,351 | 2010 | 27,357 | 2009 | 26,391 | 2008 | 25,487 | 2007 | 24,715 | 2006 | 24,107 | 2005 | 23,654 | 2004 | 23,287 | 2003 | 22,888 | 2002 | 22,375 | 2001 | 21,724 | 2000 | 20,974 | 1999 | 20,238 | 1998 | 19,548 | 1997 | 18,859 | 1996 | 18,181 | 1995 | 17,526 | 1994 | 16,894 | 1993 | 16,256 | 1992 | 15,618 | 1991 | 15,009 | 1990 | 14,429 | 1989 | 13,888 | 1988 | 13,238 | 1987 | 12,443 | 1986 | 11,617 | 1985 | 10,731 | 1984 | 9,752 | 1983 | 8,850 | 1982 | 8,214 | 1981 | 7,742 | 1980 | 7,368 | 1979 | 7,140 | 1978 | 7,065 | 1977 | 7,107 | 1976 | 7,277 | 1975 | 7,537 | 1974 | 7,812 | 1973 | 8,110 | 1972 | 8,416 | 1971 | 8,707 | 1970 | 8,947 | 1969 | 9,086 | 1968 | 9,048 | 1967 | 8,891 | 1966 | 8,732 | 1965 | 8,589 | 1964 | 8,455 | 1963 | 8,329 | 1962 | 8,214 | 1961 | 8,105 | 1960 | 8,002 |
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