| Year | Value | | 2022 | 4,863 | | 2021 | 4,817 | | 2020 | 4,735 | | 2019 | 4,622 | | 2018 | 4,490 | | 2017 | 4,300 | | 2016 | 4,065 | | 2015 | 3,845 | | 2014 | 3,682 | | 2013 | 3,604 | | 2012 | 3,603 | | 2011 | 3,620 | | 2010 | 3,598 | | 2009 | 3,522 | | 2008 | 3,396 | | 2007 | 3,232 | | 2006 | 3,056 | | 2005 | 2,905 | | 2004 | 2,801 | | 2003 | 2,684 | | 2002 | 2,536 | | 2001 | 2,388 | | 2000 | 2,223 | | 1999 | 2,052 | | 1998 | 1,887 | | 1997 | 1,729 | | 1996 | 1,584 | | 1995 | 1,456 | | 1994 | 1,369 | | 1993 | 1,331 | | 1992 | 1,314 | | 1991 | 1,311 | | 1990 | 1,324 | | 1989 | 1,347 | | 1988 | 1,377 | | 1987 | 1,417 | | 1986 | 1,464 | | 1985 | 1,510 | | 1984 | 1,554 | | 1983 | 1,598 | | 1982 | 1,644 | | 1981 | 1,692 | | 1980 | 1,743 | | 1979 | 1,775 | | 1978 | 1,785 | | 1977 | 1,800 | | 1976 | 1,812 | | 1975 | 1,810 | | 1974 | 1,789 | | 1973 | 1,749 | | 1972 | 1,695 | | 1971 | 1,669 | | 1970 | 1,660 | | 1969 | 1,628 | | 1968 | 1,582 | | 1967 | 1,534 | | 1966 | 1,491 | | 1965 | 1,457 | | 1964 | 1,401 | | 1963 | 1,260 | | 1962 | 1,071 | | 1961 | 945 | | 1960 | 879 |
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