| Year | Value | | 2022 | 10,796 | | 2021 | 11,105 | | 2020 | 11,080 | | 2019 | 10,726 | | 2018 | 10,359 | | 2017 | 10,030 | | 2016 | 9,721 | | 2015 | 9,423 | | 2014 | 9,148 | | 2013 | 8,899 | | 2012 | 8,675 | | 2011 | 8,468 | | 2010 | 8,266 | | 2009 | 8,066 | | 2008 | 7,864 | | 2007 | 7,663 | | 2006 | 7,476 | | 2005 | 7,305 | | 2004 | 7,141 | | 2003 | 6,998 | | 2002 | 6,873 | | 2001 | 6,739 | | 2000 | 6,586 | | 1999 | 6,416 | | 1998 | 6,236 | | 1997 | 6,044 | | 1996 | 5,847 | | 1995 | 5,652 | | 1994 | 5,456 | | 1993 | 5,261 | | 1992 | 5,067 | | 1991 | 4,878 | | 1990 | 4,696 | | 1989 | 4,527 | | 1988 | 4,371 | | 1987 | 4,224 | | 1986 | 4,077 | | 1985 | 3,926 | | 1984 | 3,772 | | 1983 | 3,614 | | 1982 | 3,446 | | 1981 | 3,280 | | 1980 | 3,130 | | 1979 | 2,994 | | 1978 | 2,872 | | 1977 | 2,767 | | 1976 | 2,676 | | 1975 | 2,595 | | 1974 | 2,527 | | 1973 | 2,476 | | 1972 | 2,433 | | 1971 | 2,390 | | 1970 | 2,340 | | 1969 | 2,280 | | 1968 | 2,209 | | 1967 | 2,129 | | 1966 | 2,048 | | 1965 | 1,971 | | 1964 | 1,893 | | 1963 | 1,818 | | 1962 | 1,747 | | 1961 | 1,675 | | 1960 | 1,598 |
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