Year | Value | 2022 | 33,610 | 2021 | 33,390 | 2020 | 33,169 | 2019 | 32,952 | 2018 | 32,707 | 2017 | 32,465 | 2016 | 32,230 | 2015 | 32,012 | 2014 | 31,786 | 2013 | 31,530 | 2012 | 31,260 | 2011 | 30,974 | 2010 | 30,730 | 2009 | 30,495 | 2008 | 30,242 | 2007 | 30,008 | 2006 | 29,766 | 2005 | 29,503 | 2004 | 29,225 | 2003 | 28,951 | 2002 | 28,671 | 2001 | 28,382 | 2000 | 28,029 | 1999 | 27,588 | 1998 | 27,136 | 1997 | 26,689 | 1996 | 26,232 | 1995 | 25,799 | 1994 | 25,403 | 1993 | 25,015 | 1992 | 24,630 | 1991 | 24,262 | 1990 | 23,896 | 1989 | 23,518 | 1988 | 23,137 | 1987 | 22,766 | 1986 | 22,412 | 1985 | 22,066 | 1984 | 21,728 | 1983 | 21,391 | 1982 | 21,054 | 1981 | 20,736 | 1980 | 20,434 | 1979 | 20,115 | 1978 | 19,777 | 1977 | 19,446 | 1976 | 19,128 | 1975 | 18,810 | 1974 | 18,488 | 1973 | 18,169 | 1972 | 17,858 | 1971 | 17,566 | 1970 | 17,197 | 1969 | 16,723 | 1968 | 16,238 | 1967 | 15,757 | 1966 | 15,305 | 1965 | 14,898 | 1964 | 14,504 | 1963 | 14,119 | 1962 | 13,759 | 1961 | 13,414 | 1960 | 13,106 |
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