| Year | Value | | 2022 | 91,059 | | 2021 | 89,609 | | 2020 | 88,053 | | 2019 | 86,216 | | 2018 | 84,283 | | 2017 | 82,351 | | 2016 | 80,265 | | 2015 | 77,772 | | 2014 | 74,809 | | 2013 | 71,419 | | 2012 | 67,644 | | 2011 | 63,719 | | 2010 | 59,849 | | 2009 | 56,041 | | 2008 | 52,388 | | 2007 | 48,914 | | 2006 | 45,585 | | 2005 | 42,421 | | 2004 | 39,442 | | 2003 | 36,656 | | 2002 | 34,146 | | 2001 | 31,949 | | 2000 | 30,070 | | 1999 | 28,472 | | 1998 | 27,118 | | 1997 | 25,957 | | 1996 | 24,883 | | 1995 | 23,892 | | 1994 | 22,974 | | 1993 | 22,167 | | 1992 | 21,508 | | 1991 | 20,885 | | 1990 | 20,299 | | 1989 | 19,805 | | 1988 | 19,331 | | 1987 | 18,903 | | 1986 | 18,493 | | 1985 | 18,099 | | 1984 | 17,773 | | 1983 | 17,522 | | 1982 | 17,300 | | 1981 | 17,075 | | 1980 | 16,866 | | 1979 | 16,678 | | 1978 | 16,515 | | 1977 | 16,366 | | 1976 | 16,202 | | 1975 | 16,000 | | 1974 | 15,737 | | 1973 | 15,425 | | 1972 | 15,072 | | 1971 | 14,648 | | 1970 | 14,156 | | 1969 | 13,680 | | 1968 | 13,198 | | 1967 | 12,671 | | 1966 | 12,212 | | 1965 | 11,887 | | 1964 | 11,704 | | 1963 | 11,717 | | 1962 | 11,923 | | 1961 | 12,197 | | 1960 | 12,512 |
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