| Year | Value | | 2022 | 5,405 | | 2021 | 4,990 | | 2020 | 4,597 | | 2019 | 4,258 | | 2018 | 4,014 | | 2017 | 3,824 | | 2016 | 3,685 | | 2015 | 3,617 | | 2014 | 3,572 | | 2013 | 3,532 | | 2012 | 3,504 | | 2011 | 3,524 | | 2010 | 3,595 | | 2009 | 3,644 | | 2008 | 3,659 | | 2007 | 3,635 | | 2006 | 3,542 | | 2005 | 3,399 | | 2004 | 3,270 | | 2003 | 3,180 | | 2002 | 3,099 | | 2001 | 3,040 | | 2000 | 2,979 | | 1999 | 2,892 | | 1998 | 2,805 | | 1997 | 2,732 | | 1996 | 2,634 | | 1995 | 2,514 | | 1994 | 2,432 | | 1993 | 2,375 | | 1992 | 2,315 | | 1991 | 2,271 | | 1990 | 2,231 | | 1989 | 2,194 | | 1988 | 2,178 | | 1987 | 2,150 | | 1986 | 2,121 | | 1985 | 2,087 | | 1984 | 2,056 | | 1983 | 2,068 | | 1982 | 2,081 | | 1981 | 2,037 | | 1980 | 1,983 | | 1979 | 1,918 | | 1978 | 1,816 | | 1977 | 1,764 | | 1976 | 1,782 | | 1975 | 1,791 | | 1974 | 1,779 | | 1973 | 1,778 | | 1972 | 1,765 | | 1971 | 1,753 | | 1970 | 1,735 | | 1969 | 1,695 | | 1968 | 1,627 | | 1967 | 1,525 | | 1966 | 1,410 | | 1965 | 1,342 | | 1964 | 1,316 | | 1963 | 1,260 | | 1962 | 1,191 | | 1961 | 1,133 | | 1960 | 1,073 |
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