| Year | Value | | 2022 | 3,860 | | 2021 | 3,832 | | 2020 | 3,771 | | 2019 | 3,669 | | 2018 | 3,563 | | 2017 | 3,445 | | 2016 | 3,318 | | 2015 | 3,197 | | 2014 | 3,084 | | 2013 | 2,963 | | 2012 | 2,852 | | 2011 | 2,740 | | 2010 | 2,625 | | 2009 | 2,518 | | 2008 | 2,419 | | 2007 | 2,319 | | 2006 | 2,222 | | 2005 | 2,136 | | 2004 | 2,045 | | 2003 | 1,944 | | 2002 | 1,849 | | 2001 | 1,756 | | 2000 | 1,668 | | 1999 | 1,584 | | 1998 | 1,502 | | 1997 | 1,423 | | 1996 | 1,352 | | 1995 | 1,287 | | 1994 | 1,225 | | 1993 | 1,169 | | 1992 | 1,132 | | 1991 | 1,112 | | 1990 | 1,100 | | 1989 | 1,088 | | 1988 | 1,072 | | 1987 | 1,052 | | 1986 | 1,025 | | 1985 | 992 | | 1984 | 955 | | 1983 | 912 | | 1982 | 867 | | 1981 | 820 | | 1980 | 778 | | 1979 | 745 | | 1978 | 718 | | 1977 | 692 | | 1976 | 667 | | 1975 | 652 | | 1974 | 641 | | 1973 | 626 | | 1972 | 610 | | 1971 | 582 | | 1970 | 541 | | 1969 | 511 | | 1968 | 501 | | 1967 | 488 | | 1966 | 468 | | 1965 | 442 | | 1964 | 417 | | 1963 | 391 | | 1962 | 367 | | 1961 | 353 | | 1960 | 352 |
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