| Year | Value | | 2022 | 5,824 | | 2021 | 5,463 | | 2020 | 5,078 | | 2019 | 4,714 | | 2018 | 4,464 | | 2017 | 4,393 | | 2016 | 4,514 | | 2015 | 4,740 | | 2014 | 4,923 | | 2013 | 4,964 | | 2012 | 4,812 | | 2011 | 4,500 | | 2010 | 4,111 | | 2009 | 3,744 | | 2008 | 3,501 | | 2007 | 3,447 | | 2006 | 3,556 | | 2005 | 3,741 | | 2004 | 3,879 | | 2003 | 3,909 | | 2002 | 3,654 | | 2001 | 3,200 | | 2000 | 2,881 | | 1999 | 2,754 | | 1998 | 2,733 | | 1997 | 2,724 | | 1996 | 2,720 | | 1995 | 2,717 | | 1994 | 2,714 | | 1993 | 2,714 | | 1992 | 2,720 | | 1991 | 2,687 | | 1990 | 2,631 | | 1989 | 2,613 | | 1988 | 2,606 | | 1987 | 2,591 | | 1986 | 2,565 | | 1985 | 2,530 | | 1984 | 2,480 | | 1983 | 2,415 | | 1982 | 2,335 | | 1981 | 2,270 | | 1980 | 2,228 | | 1979 | 2,160 | | 1978 | 2,059 | | 1977 | 1,950 | | 1976 | 1,842 | | 1975 | 1,743 | | 1974 | 1,651 | | 1973 | 1,565 | | 1972 | 1,491 | | 1971 | 1,423 | | 1970 | 1,363 | | 1969 | 1,313 | | 1968 | 1,270 | | 1967 | 1,238 | | 1966 | 1,214 | | 1965 | 1,189 | | 1964 | 1,164 | | 1963 | 1,138 | | 1962 | 1,111 | | 1961 | 1,083 | | 1960 | 1,057 |
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