| Year | Value | | 2022 | 12,927 | | 2021 | 12,315 | | 2020 | 11,676 | | 2019 | 11,074 | | 2018 | 10,548 | | 2017 | 10,064 | | 2016 | 9,603 | | 2015 | 9,163 | | 2014 | 8,733 | | 2013 | 8,331 | | 2012 | 7,951 | | 2011 | 7,565 | | 2010 | 7,198 | | 2009 | 6,885 | | 2008 | 6,623 | | 2007 | 6,413 | | 2006 | 6,274 | | 2005 | 6,174 | | 2004 | 6,079 | | 2003 | 5,978 | | 2002 | 5,859 | | 2001 | 5,721 | | 2000 | 5,571 | | 1999 | 5,397 | | 1998 | 5,196 | | 1997 | 4,993 | | 1996 | 4,793 | | 1995 | 4,601 | | 1994 | 4,429 | | 1993 | 4,279 | | 1992 | 4,145 | | 1991 | 4,025 | | 1990 | 3,909 | | 1989 | 3,791 | | 1988 | 3,672 | | 1987 | 3,555 | | 1986 | 3,438 | | 1985 | 3,322 | | 1984 | 3,210 | | 1983 | 3,105 | | 1982 | 3,003 | | 1981 | 2,905 | | 1980 | 2,813 | | 1979 | 2,723 | | 1978 | 2,635 | | 1977 | 2,551 | | 1976 | 2,471 | | 1975 | 2,402 | | 1974 | 2,348 | | 1973 | 2,299 | | 1972 | 2,253 | | 1971 | 2,207 | | 1970 | 2,137 | | 1969 | 2,048 | | 1968 | 1,963 | | 1967 | 1,886 | | 1966 | 1,816 | | 1965 | 1,755 | | 1964 | 1,700 | | 1963 | 1,652 | | 1962 | 1,610 | | 1961 | 1,571 | | 1960 | 1,533 |
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