Year | Value | 2022 | 2,503 | 2021 | 2,497 | 2020 | 2,503 | 2019 | 2,557 | 2018 | 2,659 | 2017 | 2,752 | 2016 | 2,824 | 2015 | 2,863 | 2014 | 2,861 | 2013 | 2,830 | 2012 | 2,791 | 2011 | 2,765 | 2010 | 2,777 | 2009 | 2,847 | 2008 | 2,956 | 2007 | 3,056 | 2006 | 3,111 | 2005 | 3,076 | 2004 | 3,003 | 2003 | 2,924 | 2002 | 2,823 | 2001 | 2,744 | 2000 | 2,755 | 1999 | 2,782 | 1998 | 2,749 | 1997 | 2,666 | 1996 | 2,503 | 1995 | 2,315 | 1994 | 2,329 | 1993 | 2,544 | 1992 | 2,813 | 1991 | 3,178 | 1990 | 3,540 | 1989 | 3,794 | 1988 | 4,165 | 1987 | 4,431 | 1986 | 4,485 | 1985 | 4,349 | 1984 | 4,079 | 1983 | 3,730 | 1982 | 3,404 | 1981 | 3,193 | 1980 | 3,062 | 1979 | 2,934 | 1978 | 2,976 | 1977 | 2,932 | 1976 | 3,074 | 1975 | 3,096 | 1974 | 3,079 | 1973 | 3,069 | 1972 | 3,008 | 1971 | 3,041 | 1970 | 2,924 | 1969 | 2,856 | 1968 | 2,607 | 1967 | 2,231 | 1966 | 2,000 | 1965 | 1,761 | 1964 | 1,568 | 1963 | 1,482 | 1962 | 1,255 | 1961 | 1,185 | 1960 | 1,131 |
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