| Year | Value | | 2022 | 11,114 | | 2021 | 10,855 | | 2020 | 10,520 | | 2019 | 10,096 | | 2018 | 9,609 | | 2017 | 9,062 | | 2016 | 8,461 | | 2015 | 7,842 | | 2014 | 7,233 | | 2013 | 6,648 | | 2012 | 6,092 | | 2011 | 5,570 | | 2010 | 5,086 | | 2009 | 4,568 | | 2008 | 4,024 | | 2007 | 3,542 | | 2006 | 3,142 | | 2005 | 2,840 | | 2004 | 2,625 | | 2003 | 2,489 | | 2002 | 2,422 | | 2001 | 2,413 | | 2000 | 2,452 | | 1999 | 2,568 | | 1998 | 2,745 | | 1997 | 2,935 | | 1996 | 3,130 | | 1995 | 3,325 | | 1994 | 3,513 | | 1993 | 3,687 | | 1992 | 3,844 | | 1991 | 3,985 | | 1990 | 4,110 | | 1989 | 4,157 | | 1988 | 4,119 | | 1987 | 4,054 | | 1986 | 3,970 | | 1985 | 3,874 | | 1984 | 3,775 | | 1983 | 3,673 | | 1982 | 3,567 | | 1981 | 3,464 | | 1980 | 3,425 | | 1979 | 3,462 | | 1978 | 3,513 | | 1977 | 3,564 | | 1976 | 3,616 | | 1975 | 3,664 | | 1974 | 3,713 | | 1973 | 3,766 | | 1972 | 3,824 | | 1971 | 3,874 | | 1970 | 3,900 | | 1969 | 3,875 | | 1968 | 3,814 | | 1967 | 3,754 | | 1966 | 3,691 | | 1965 | 3,619 | | 1964 | 3,541 | | 1963 | 3,453 | | 1962 | 3,354 | | 1961 | 3,264 | | 1960 | 3,154 |
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