| Year | Value | | 2022 | 10,177 | | 2021 | 9,962 | | 2020 | 9,701 | | 2019 | 9,411 | | 2018 | 9,123 | | 2017 | 8,853 | | 2016 | 8,624 | | 2015 | 8,419 | | 2014 | 8,219 | | 2013 | 8,034 | | 2012 | 7,873 | | 2011 | 7,714 | | 2010 | 7,583 | | 2009 | 7,492 | | 2008 | 7,406 | | 2007 | 7,270 | | 2006 | 7,072 | | 2005 | 6,842 | | 2004 | 6,585 | | 2003 | 6,314 | | 2002 | 6,049 | | 2001 | 5,789 | | 2000 | 5,524 | | 1999 | 5,292 | | 1998 | 5,101 | | 1997 | 4,907 | | 1996 | 4,760 | | 1995 | 4,660 | | 1994 | 4,539 | | 1993 | 4,393 | | 1992 | 4,237 | | 1991 | 4,097 | | 1990 | 3,998 | | 1989 | 3,904 | | 1988 | 3,803 | | 1987 | 3,714 | | 1986 | 3,586 | | 1985 | 3,449 | | 1984 | 3,339 | | 1983 | 3,236 | | 1982 | 3,141 | | 1981 | 3,071 | | 1980 | 3,029 | | 1979 | 2,919 | | 1978 | 2,793 | | 1977 | 2,752 | | 1976 | 2,724 | | 1975 | 2,672 | | 1974 | 2,602 | | 1973 | 2,534 | | 1972 | 2,466 | | 1971 | 2,400 | | 1970 | 2,341 | | 1969 | 2,284 | | 1968 | 2,221 | | 1967 | 2,159 | | 1966 | 2,061 | | 1965 | 1,978 | | 1964 | 1,965 | | 1963 | 1,984 | | 1962 | 2,017 | | 1961 | 2,004 | | 1960 | 1,961 |
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