| Year | Value | | 2022 | 8,187 | | 2021 | 8,119 | | 2020 | 7,980 | | 2019 | 7,717 | | 2018 | 7,380 | | 2017 | 7,048 | | 2016 | 6,741 | | 2015 | 6,457 | | 2014 | 6,189 | | 2013 | 5,943 | | 2012 | 5,718 | | 2011 | 5,505 | | 2010 | 5,300 | | 2009 | 5,101 | | 2008 | 4,917 | | 2007 | 4,748 | | 2006 | 4,591 | | 2005 | 4,442 | | 2004 | 4,299 | | 2003 | 4,159 | | 2002 | 4,017 | | 2001 | 3,876 | | 2000 | 3,739 | | 1999 | 3,606 | | 1998 | 3,482 | | 1997 | 3,366 | | 1996 | 3,256 | | 1995 | 3,161 | | 1994 | 3,106 | | 1993 | 3,021 | | 1992 | 3,052 | | 1991 | 3,051 | | 1990 | 2,779 | | 1989 | 2,490 | | 1988 | 2,286 | | 1987 | 2,125 | | 1986 | 1,977 | | 1985 | 1,854 | | 1984 | 1,756 | | 1983 | 1,680 | | 1982 | 1,613 | | 1981 | 1,542 | | 1980 | 1,453 | | 1979 | 1,347 | | 1978 | 1,228 | | 1977 | 1,105 | | 1976 | 992 | | 1975 | 896 | | 1974 | 817 | | 1973 | 755 | | 1972 | 702 | | 1971 | 652 | | 1970 | 607 | | 1969 | 566 | | 1968 | 530 | | 1967 | 499 | | 1966 | 470 | | 1965 | 444 | | 1964 | 418 | | 1963 | 396 | | 1962 | 375 | | 1961 | 355 | | 1960 | 337 |
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