| Year | Value | | 2022 | 4,012 | | 2021 | 3,662 | | 2020 | 3,320 | | 2019 | 2,991 | | 2018 | 2,700 | | 2017 | 2,483 | | 2016 | 2,355 | | 2015 | 2,301 | | 2014 | 2,283 | | 2013 | 2,258 | | 2012 | 2,199 | | 2011 | 2,109 | | 2010 | 2,013 | | 2009 | 1,935 | | 2008 | 1,873 | | 2007 | 1,820 | | 2006 | 1,774 | | 2005 | 1,722 | | 2004 | 1,650 | | 2003 | 1,556 | | 2002 | 1,448 | | 2001 | 1,339 | | 2000 | 1,245 | | 1999 | 1,178 | | 1998 | 1,132 | | 1997 | 1,096 | | 1996 | 1,059 | | 1995 | 1,015 | | 1994 | 963 | | 1993 | 910 | | 1992 | 861 | | 1991 | 816 | | 1990 | 780 | | 1989 | 761 | | 1988 | 759 | | 1987 | 773 | | 1986 | 794 | | 1985 | 812 | | 1984 | 813 | | 1983 | 796 | | 1982 | 773 | | 1981 | 754 | | 1980 | 735 | | 1979 | 711 | | 1978 | 679 | | 1977 | 643 | | 1976 | 611 | | 1975 | 581 | | 1974 | 553 | | 1973 | 527 | | 1972 | 491 | | 1971 | 456 | | 1970 | 443 | | 1969 | 442 | | 1968 | 442 | | 1967 | 442 | | 1966 | 438 | | 1965 | 423 | | 1964 | 397 | | 1963 | 362 | | 1962 | 329 | | 1961 | 302 | | 1960 | 287 |
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