| Year | Value | | 2022 | 154,715 | | 2021 | 149,865 | | 2020 | 144,689 | | 2019 | 139,143 | | 2018 | 133,507 | | 2017 | 127,997 | | 2016 | 122,651 | | 2015 | 117,641 | | 2014 | 113,020 | | 2013 | 108,691 | | 2012 | 104,651 | | 2011 | 100,894 | | 2010 | 97,463 | | 2009 | 92,359 | | 2008 | 86,447 | | 2007 | 82,096 | | 2006 | 78,698 | | 2005 | 75,759 | | 2004 | 75,145 | | 2003 | 75,841 | | 2002 | 75,050 | | 2001 | 73,394 | | 2000 | 71,196 | | 1999 | 68,751 | | 1998 | 66,198 | | 1997 | 63,652 | | 1996 | 61,336 | | 1995 | 59,400 | | 1994 | 57,911 | | 1993 | 55,765 | | 1992 | 53,527 | | 1991 | 52,142 | | 1990 | 50,842 | | 1989 | 49,657 | | 1988 | 48,601 | | 1987 | 47,665 | | 1986 | 46,861 | | 1985 | 46,190 | | 1984 | 45,637 | | 1983 | 45,173 | | 1982 | 44,762 | | 1981 | 44,393 | | 1980 | 44,063 | | 1979 | 43,770 | | 1978 | 43,497 | | 1977 | 43,251 | | 1976 | 43,061 | | 1975 | 42,940 | | 1974 | 42,882 | | 1973 | 42,874 | | 1972 | 42,908 | | 1971 | 42,967 | | 1970 | 43,032 | | 1969 | 43,097 | | 1968 | 43,171 | | 1967 | 43,235 | | 1966 | 43,262 | | 1965 | 43,236 | | 1964 | 43,157 | | 1963 | 43,032 | | 1962 | 42,847 | | 1961 | 42,587 | | 1960 | 42,250 |
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