Year | Value | 2022 | 27,622 | 2021 | 28,197 | 2020 | 28,702 | 2019 | 29,178 | 2018 | 29,665 | 2017 | 30,138 | 2016 | 30,535 | 2015 | 30,752 | 2014 | 30,740 | 2013 | 30,538 | 2012 | 30,195 | 2011 | 29,770 | 2010 | 29,317 | 2009 | 28,855 | 2008 | 28,393 | 2007 | 27,923 | 2006 | 27,441 | 2005 | 26,937 | 2004 | 26,401 | 2003 | 25,803 | 2002 | 25,091 | 2001 | 24,252 | 2000 | 23,334 | 1999 | 22,306 | 1998 | 21,232 | 1997 | 20,276 | 1996 | 19,443 | 1995 | 18,704 | 1994 | 18,054 | 1993 | 17,490 | 1992 | 17,000 | 1991 | 16,600 | 1990 | 16,353 | 1989 | 16,290 | 1988 | 16,286 | 1987 | 16,184 | 1986 | 15,944 | 1985 | 15,550 | 1984 | 15,024 | 1983 | 14,465 | 1982 | 13,937 | 1981 | 13,457 | 1980 | 13,080 | 1979 | 12,870 | 1978 | 12,739 | 1977 | 12,610 | 1976 | 12,529 | 1975 | 12,497 | 1974 | 12,394 | 1973 | 12,195 | 1972 | 11,986 | 1971 | 11,675 | 1970 | 11,083 | 1969 | 10,342 | 1968 | 9,685 | 1967 | 9,129 | 1966 | 8,662 | 1965 | 8,262 | 1964 | 7,912 | 1963 | 7,624 | 1962 | 7,411 | 1961 | 7,288 | 1960 | 7,338 |
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