| Year | Value | | 2022 | 10,334 | | 2021 | 9,861 | | 2020 | 9,435 | | 2019 | 9,061 | | 2018 | 8,672 | | 2017 | 8,244 | | 2016 | 7,851 | | 2015 | 7,536 | | 2014 | 7,287 | | 2013 | 7,137 | | 2012 | 7,101 | | 2011 | 7,094 | | 2010 | 7,084 | | 2009 | 7,043 | | 2008 | 6,966 | | 2007 | 6,872 | | 2006 | 6,753 | | 2005 | 6,606 | | 2004 | 6,438 | | 2003 | 6,255 | | 2002 | 6,054 | | 2001 | 5,845 | | 2000 | 5,637 | | 1999 | 5,442 | | 1998 | 5,267 | | 1997 | 5,098 | | 1996 | 4,930 | | 1995 | 4,763 | | 1994 | 4,596 | | 1993 | 4,426 | | 1992 | 4,252 | | 1991 | 4,071 | | 1990 | 3,882 | | 1989 | 3,674 | | 1988 | 3,451 | | 1987 | 3,237 | | 1986 | 3,039 | | 1985 | 2,871 | | 1984 | 2,734 | | 1983 | 2,623 | | 1982 | 2,542 | | 1981 | 2,491 | | 1980 | 2,456 | | 1979 | 2,628 | | 1978 | 2,848 | | 1977 | 2,836 | | 1976 | 2,741 | | 1975 | 2,637 | | 1974 | 2,527 | | 1973 | 2,418 | | 1972 | 2,312 | | 1971 | 2,210 | | 1970 | 2,116 | | 1969 | 2,029 | | 1968 | 1,947 | | 1967 | 1,871 | | 1966 | 1,799 | | 1965 | 1,726 | | 1964 | 1,654 | | 1963 | 1,583 | | 1962 | 1,518 | | 1961 | 1,460 | | 1960 | 1,404 |
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