| Year | Value | | 2022 | 12,588 | | 2021 | 12,209 | | 2020 | 11,842 | | 2019 | 11,461 | | 2018 | 11,034 | | 2017 | 10,554 | | 2016 | 10,019 | | 2015 | 9,441 | | 2014 | 8,849 | | 2013 | 8,271 | | 2012 | 7,717 | | 2011 | 7,184 | | 2010 | 6,776 | | 2009 | 6,478 | | 2008 | 6,163 | | 2007 | 5,830 | | 2006 | 5,479 | | 2005 | 5,117 | | 2004 | 4,762 | | 2003 | 4,451 | | 2002 | 4,201 | | 2001 | 4,019 | | 2000 | 3,893 | | 1999 | 3,788 | | 1998 | 3,669 | | 1997 | 3,521 | | 1996 | 3,343 | | 1995 | 3,150 | | 1994 | 2,963 | | 1993 | 2,791 | | 1992 | 2,643 | | 1991 | 2,547 | | 1990 | 2,515 | | 1989 | 2,512 | | 1988 | 2,510 | | 1987 | 2,485 | | 1986 | 2,438 | | 1985 | 2,377 | | 1984 | 2,307 | | 1983 | 2,244 | | 1982 | 2,192 | | 1981 | 2,160 | | 1980 | 2,148 | | 1979 | 2,140 | | 1978 | 2,111 | | 1977 | 2,050 | | 1976 | 1,963 | | 1975 | 1,862 | | 1974 | 1,759 | | 1973 | 1,679 | | 1972 | 1,627 | | 1971 | 1,601 | | 1970 | 1,593 | | 1969 | 1,585 | | 1968 | 1,560 | | 1967 | 1,514 | | 1966 | 1,451 | | 1965 | 1,385 | | 1964 | 1,321 | | 1963 | 1,268 | | 1962 | 1,232 | | 1961 | 1,210 | | 1960 | 1,190 |
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