| Year | Value | | 2022 | 12,807 | | 2021 | 12,335 | | 2020 | 11,798 | | 2019 | 11,212 | | 2018 | 10,638 | | 2017 | 10,085 | | 2016 | 9,603 | | 2015 | 9,168 | | 2014 | 8,792 | | 2013 | 8,418 | | 2012 | 8,022 | | 2011 | 7,650 | | 2010 | 7,272 | | 2009 | 6,919 | | 2008 | 6,543 | | 2007 | 6,180 | | 2006 | 5,961 | | 2005 | 5,778 | | 2004 | 5,563 | | 2003 | 5,192 | | 2002 | 4,814 | | 2001 | 4,501 | | 2000 | 4,238 | | 1999 | 4,098 | | 1998 | 3,964 | | 1997 | 3,876 | | 1996 | 3,881 | | 1995 | 3,593 | | 1994 | 3,236 | | 1993 | 3,063 | | 1992 | 2,878 | | 1991 | 2,988 | | 1990 | 3,089 | | 1989 | 2,986 | | 1988 | 2,883 | | 1987 | 2,788 | | 1986 | 2,697 | | 1985 | 2,607 | | 1984 | 2,524 | | 1983 | 2,446 | | 1982 | 2,373 | | 1981 | 2,304 | | 1980 | 2,241 | | 1979 | 2,179 | | 1978 | 2,118 | | 1977 | 2,062 | | 1976 | 2,010 | | 1975 | 1,965 | | 1974 | 1,924 | | 1973 | 1,892 | | 1972 | 1,863 | | 1971 | 1,833 | | 1970 | 1,806 | | 1969 | 1,778 | | 1968 | 1,747 | | 1967 | 1,714 | | 1966 | 1,680 | | 1965 | 1,651 | | 1964 | 1,621 | | 1963 | 1,593 | | 1962 | 1,569 | | 1961 | 1,544 | | 1960 | 1,518 |
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