| Year | Value | | 2022 | 12,717 | | 2021 | 12,300 | | 2020 | 11,890 | | 2019 | 11,485 | | 2018 | 11,036 | | 2017 | 10,558 | | 2016 | 10,061 | | 2015 | 9,542 | | 2014 | 9,041 | | 2013 | 8,661 | | 2012 | 8,385 | | 2011 | 8,134 | | 2010 | 7,921 | | 2009 | 7,719 | | 2008 | 7,488 | | 2007 | 7,220 | | 2006 | 6,870 | | 2005 | 6,392 | | 2004 | 5,822 | | 2003 | 5,231 | | 2002 | 4,679 | | 2001 | 4,222 | | 2000 | 3,870 | | 1999 | 3,613 | | 1998 | 3,445 | | 1997 | 3,340 | | 1996 | 3,280 | | 1995 | 3,261 | | 1994 | 3,251 | | 1993 | 3,241 | | 1992 | 3,253 | | 1991 | 3,295 | | 1990 | 3,354 | | 1989 | 3,373 | | 1988 | 3,338 | | 1987 | 3,301 | | 1986 | 3,276 | | 1985 | 3,263 | | 1984 | 3,228 | | 1983 | 3,151 | | 1982 | 3,059 | | 1981 | 2,966 | | 1980 | 2,871 | | 1979 | 2,780 | | 1978 | 2,698 | | 1977 | 2,620 | | 1976 | 2,536 | | 1975 | 2,445 | | 1974 | 2,356 | | 1973 | 2,272 | | 1972 | 2,192 | | 1971 | 2,109 | | 1970 | 2,027 | | 1969 | 1,947 | | 1968 | 1,869 | | 1967 | 1,788 | | 1966 | 1,714 | | 1965 | 1,659 | | 1964 | 1,609 | | 1963 | 1,555 | | 1962 | 1,499 | | 1961 | 1,441 | | 1960 | 1,382 |
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