| Year | Value | | 2022 | 12,125 | | 2021 | 11,840 | | 2020 | 11,498 | | 2019 | 11,075 | | 2018 | 10,568 | | 2017 | 10,003 | | 2016 | 9,443 | | 2015 | 8,944 | | 2014 | 8,543 | | 2013 | 8,290 | | 2012 | 8,191 | | 2011 | 8,186 | | 2010 | 8,187 | | 2009 | 8,090 | | 2008 | 7,804 | | 2007 | 7,316 | | 2006 | 6,693 | | 2005 | 6,053 | | 2004 | 5,527 | | 2003 | 5,284 | | 2002 | 5,418 | | 2001 | 5,702 | | 2000 | 5,830 | | 1999 | 5,719 | | 1998 | 5,547 | | 1997 | 5,428 | | 1996 | 5,305 | | 1995 | 5,177 | | 1994 | 5,044 | | 1993 | 4,913 | | 1992 | 4,786 | | 1991 | 4,647 | | 1990 | 4,502 | | 1989 | 4,375 | | 1988 | 4,266 | | 1987 | 4,171 | | 1986 | 4,093 | | 1985 | 4,027 | | 1984 | 3,973 | | 1983 | 3,929 | | 1982 | 3,898 | | 1981 | 3,878 | | 1980 | 3,869 | | 1979 | 3,862 | | 1978 | 3,853 | | 1977 | 3,843 | | 1976 | 3,826 | | 1975 | 3,804 | | 1974 | 3,779 | | 1973 | 3,744 | | 1972 | 3,699 | | 1971 | 3,646 | | 1970 | 3,588 | | 1969 | 3,525 | | 1968 | 3,458 | | 1967 | 3,389 | | 1966 | 3,320 | | 1965 | 3,249 | | 1964 | 3,171 | | 1963 | 3,086 | | 1962 | 2,994 | | 1961 | 2,902 | | 1960 | 2,816 |
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