| Year | Value | | 2022 | 10,187 | | 2021 | 9,750 | | 2020 | 9,593 | | 2019 | 9,082 | | 2018 | 8,197 | | 2017 | 7,483 | | 2016 | 6,863 | | 2015 | 5,981 | | 2014 | 5,275 | | 2013 | 5,008 | | 2012 | 4,698 | | 2011 | 4,365 | | 2010 | 3,999 | | 2009 | 3,713 | | 2008 | 3,525 | | 2007 | 3,367 | | 2006 | 3,221 | | 2005 | 3,079 | | 2004 | 2,912 | | 2003 | 2,730 | | 2002 | 2,571 | | 2001 | 2,434 | | 2000 | 2,317 | | 1999 | 2,206 | | 1998 | 2,091 | | 1997 | 1,974 | | 1996 | 1,859 | | 1995 | 1,822 | | 1994 | 1,984 | | 1993 | 2,187 | | 1992 | 2,102 | | 1991 | 1,619 | | 1990 | 1,788 | | 1989 | 2,183 | | 1988 | 1,983 | | 1987 | 1,825 | | 1986 | 1,697 | | 1985 | 1,631 | | 1984 | 1,614 | | 1983 | 1,611 | | 1982 | 1,626 | | 1981 | 1,645 | | 1980 | 1,662 | | 1979 | 1,684 | | 1978 | 1,725 | | 1977 | 1,771 | | 1976 | 1,800 | | 1975 | 1,769 | | 1974 | 1,678 | | 1973 | 1,561 | | 1972 | 1,431 | | 1971 | 1,315 | | 1970 | 1,205 | | 1969 | 1,089 | | 1968 | 990 | | 1967 | 914 | | 1966 | 847 | | 1965 | 804 | | 1964 | 790 | | 1963 | 780 | | 1962 | 765 | | 1961 | 734 | | 1960 | 688 |
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