Year | Value | 2022 | 26,741 | 2021 | 27,274 | 2020 | 27,862 | 2019 | 28,486 | 2018 | 29,118 | 2017 | 29,679 | 2016 | 30,023 | 2015 | 30,024 | 2014 | 29,695 | 2013 | 29,157 | 2012 | 28,514 | 2011 | 27,844 | 2010 | 27,178 | 2009 | 26,599 | 2008 | 26,140 | 2007 | 25,724 | 2006 | 25,330 | 2005 | 24,978 | 2004 | 24,671 | 2003 | 24,349 | 2002 | 23,942 | 2001 | 23,403 | 2000 | 22,739 | 1999 | 21,836 | 1998 | 20,796 | 1997 | 19,877 | 1996 | 19,097 | 1995 | 18,435 | 1994 | 17,880 | 1993 | 17,428 | 1992 | 17,077 | 1991 | 16,842 | 1990 | 16,773 | 1989 | 16,878 | 1988 | 17,045 | 1987 | 17,140 | 1986 | 17,118 | 1985 | 16,956 | 1984 | 16,662 | 1983 | 16,311 | 1982 | 15,954 | 1981 | 15,605 | 1980 | 15,220 | 1979 | 14,820 | 1978 | 14,435 | 1977 | 14,047 | 1976 | 13,712 | 1975 | 13,432 | 1974 | 13,114 | 1973 | 12,730 | 1972 | 12,334 | 1971 | 11,874 | 1970 | 11,265 | 1969 | 10,598 | 1968 | 10,029 | 1967 | 9,574 | 1966 | 9,221 | 1965 | 8,947 | 1964 | 8,738 | 1963 | 8,597 | 1962 | 8,527 | 1961 | 8,535 | 1960 | 8,653 |
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