| Year | Value | | 2022 | 3,280 | | 2021 | 3,209 | | 2020 | 3,143 | | 2019 | 3,078 | | 2018 | 3,009 | | 2017 | 2,938 | | 2016 | 2,865 | | 2015 | 2,787 | | 2014 | 2,710 | | 2013 | 2,642 | | 2012 | 2,573 | | 2011 | 2,488 | | 2010 | 2,397 | | 2009 | 2,287 | | 2008 | 2,157 | | 2007 | 2,041 | | 2006 | 1,955 | | 2005 | 1,886 | | 2004 | 1,826 | | 2003 | 1,767 | | 2002 | 1,709 | | 2001 | 1,648 | | 2000 | 1,583 | | 1999 | 1,526 | | 1998 | 1,485 | | 1997 | 1,454 | | 1996 | 1,436 | | 1995 | 1,431 | | 1994 | 1,436 | | 1993 | 1,446 | | 1992 | 1,454 | | 1991 | 1,458 | | 1990 | 1,457 | | 1989 | 1,449 | | 1988 | 1,430 | | 1987 | 1,409 | | 1986 | 1,388 | | 1985 | 1,366 | | 1984 | 1,338 | | 1983 | 1,308 | | 1982 | 1,275 | | 1981 | 1,234 | | 1980 | 1,189 | | 1979 | 1,090 | | 1978 | 975 | | 1977 | 914 | | 1976 | 874 | | 1975 | 838 | | 1974 | 807 | | 1973 | 781 | | 1972 | 760 | | 1971 | 744 | | 1970 | 734 | | 1969 | 729 | | 1968 | 729 | | 1967 | 730 | | 1966 | 726 | | 1965 | 718 | | 1964 | 707 | | 1963 | 695 | | 1962 | 686 | | 1961 | 684 | | 1960 | 689 |
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