Year | Value | 2022 | 9,062 | 2021 | 9,169 | 2020 | 9,386 | 2019 | 9,568 | 2018 | 9,645 | 2017 | 9,630 | 2016 | 9,519 | 2015 | 9,322 | 2014 | 9,122 | 2013 | 9,006 | 2012 | 9,029 | 2011 | 9,194 | 2010 | 9,401 | 2009 | 9,596 | 2008 | 9,707 | 2007 | 9,675 | 2006 | 9,582 | 2005 | 9,533 | 2004 | 9,574 | 2003 | 9,725 | 2002 | 9,912 | 2001 | 9,983 | 2000 | 9,962 | 1999 | 9,921 | 1998 | 9,872 | 1997 | 9,874 | 1996 | 10,007 | 1995 | 10,264 | 1994 | 10,577 | 1993 | 10,926 | 1992 | 11,296 | 1991 | 11,625 | 1990 | 11,862 | 1989 | 11,930 | 1988 | 11,882 | 1987 | 11,881 | 1986 | 11,996 | 1985 | 12,251 | 1984 | 12,634 | 1983 | 13,113 | 1982 | 13,650 | 1981 | 14,212 | 1980 | 14,749 | 1979 | 15,123 | 1978 | 15,273 | 1977 | 15,256 | 1976 | 15,091 | 1975 | 14,813 | 1974 | 14,474 | 1973 | 14,101 | 1972 | 13,705 | 1971 | 13,312 | 1970 | 12,925 | 1969 | 12,484 | 1968 | 12,073 | 1967 | 11,752 | 1966 | 11,433 | 1965 | 11,099 | 1964 | 10,830 | 1963 | 10,576 | 1962 | 10,274 | 1961 | 10,010 | 1960 | 9,861 |
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