| Year | Value | | 2022 | 9,487 | | 2021 | 9,071 | | 2020 | 8,618 | | 2019 | 8,176 | | 2018 | 7,782 | | 2017 | 7,452 | | 2016 | 7,193 | | 2015 | 6,999 | | 2014 | 6,855 | | 2013 | 6,746 | | 2012 | 6,646 | | 2011 | 6,534 | | 2010 | 6,407 | | 2009 | 6,273 | | 2008 | 6,137 | | 2007 | 6,005 | | 2006 | 5,872 | | 2005 | 5,739 | | 2004 | 5,608 | | 2003 | 5,459 | | 2002 | 5,278 | | 2001 | 5,074 | | 2000 | 4,849 | | 1999 | 4,610 | | 1998 | 4,396 | | 1997 | 4,227 | | 1996 | 4,070 | | 1995 | 3,915 | | 1994 | 3,793 | | 1993 | 3,718 | | 1992 | 3,820 | | 1991 | 3,899 | | 1990 | 3,769 | | 1989 | 3,616 | | 1988 | 3,465 | | 1987 | 3,322 | | 1986 | 3,185 | | 1985 | 3,055 | | 1984 | 2,931 | | 1983 | 2,813 | | 1982 | 2,699 | | 1981 | 2,591 | | 1980 | 2,488 | | 1979 | 2,390 | | 1978 | 2,299 | | 1977 | 2,213 | | 1976 | 2,130 | | 1975 | 2,052 | | 1974 | 1,979 | | 1973 | 1,910 | | 1972 | 1,843 | | 1971 | 1,780 | | 1970 | 1,718 | | 1969 | 1,659 | | 1968 | 1,604 | | 1967 | 1,554 | | 1966 | 1,509 | | 1965 | 1,468 | | 1964 | 1,431 | | 1963 | 1,397 | | 1962 | 1,366 | | 1961 | 1,336 | | 1960 | 1,308 |
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