| Year | Value | | 2022 | 3,033 | | 2021 | 2,441 | | 2020 | 2,319 | | 2019 | 2,172 | | 2018 | 2,021 | | 2017 | 1,867 | | 2016 | 1,721 | | 2015 | 1,596 | | 2014 | 1,483 | | 2013 | 1,397 | | 2012 | 1,314 | | 2011 | 1,249 | | 2010 | 1,240 | | 2009 | 1,176 | | 2008 | 1,146 | | 2007 | 1,094 | | 2006 | 1,054 | | 2005 | 995 | | 2004 | 951 | | 2003 | 914 | | 2002 | 896 | | 2001 | 858 | | 2000 | 853 | | 1999 | 850 | | 1998 | 852 | | 1997 | 926 | | 1996 | 1,007 | | 1995 | 1,015 | | 1994 | 1,025 | | 1993 | 1,010 | | 1992 | 984 | | 1991 | 974 | | 1990 | 957 | | 1989 | 945 | | 1988 | 932 | | 1987 | 921 | | 1986 | 873 | | 1985 | 857 | | 1984 | 838 | | 1983 | 820 | | 1982 | 805 | | 1981 | 785 | | 1980 | 758 | | 1979 | 731 | | 1978 | 707 | | 1977 | 708 | | 1976 | 715 | | 1975 | 717 | | 1974 | 717 | | 1973 | 721 | | 1972 | 718 | | 1971 | 701 | | 1970 | 696 | | 1969 | 697 | | 1968 | 697 | | 1967 | 691 | | 1966 | 678 | | 1965 | 659 | | 1964 | 637 | | 1963 | 614 | | 1962 | 594 | | 1961 | 576 | | 1960 | 562 |
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