| Year | Value | | 2022 | 7,770 | | 2021 | 7,617 | | 2020 | 7,442 | | 2019 | 7,301 | | 2018 | 7,152 | | 2017 | 6,944 | | 2016 | 6,679 | | 2015 | 6,386 | | 2014 | 6,110 | | 2013 | 5,846 | | 2012 | 5,633 | | 2011 | 5,442 | | 2010 | 5,262 | | 2009 | 5,095 | | 2008 | 4,931 | | 2007 | 4,774 | | 2006 | 4,631 | | 2005 | 4,492 | | 2004 | 4,349 | | 2003 | 4,210 | | 2002 | 4,075 | | 2001 | 3,950 | | 2000 | 3,844 | | 1999 | 3,739 | | 1998 | 3,626 | | 1997 | 3,510 | | 1996 | 3,386 | | 1995 | 3,257 | | 1994 | 3,125 | | 1993 | 2,991 | | 1992 | 2,866 | | 1991 | 2,750 | | 1990 | 2,633 | | 1989 | 2,524 | | 1988 | 2,427 | | 1987 | 2,333 | | 1986 | 2,242 | | 1985 | 2,154 | | 1984 | 2,064 | | 1983 | 1,973 | | 1982 | 1,886 | | 1981 | 1,802 | | 1980 | 1,729 | | 1979 | 1,675 | | 1978 | 1,640 | | 1977 | 1,615 | | 1976 | 1,597 | | 1975 | 1,605 | | 1974 | 1,634 | | 1973 | 1,662 | | 1972 | 1,681 | | 1971 | 1,658 | | 1970 | 1,585 | | 1969 | 1,491 | | 1968 | 1,433 | | 1967 | 1,392 | | 1966 | 1,346 | | 1965 | 1,295 | | 1964 | 1,254 | | 1963 | 1,215 | | 1962 | 1,180 | | 1961 | 1,148 | | 1960 | 1,117 |
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