| Year | Value | | 2022 | 5,302 | | 2021 | 4,753 | | 2020 | 4,276 | | 2019 | 3,885 | | 2018 | 3,561 | | 2017 | 3,295 | | 2016 | 3,070 | | 2015 | 2,882 | | 2014 | 2,736 | | 2013 | 2,677 | | 2012 | 2,709 | | 2011 | 2,775 | | 2010 | 2,861 | | 2009 | 2,949 | | 2008 | 3,030 | | 2007 | 3,102 | | 2006 | 3,159 | | 2005 | 3,177 | | 2004 | 3,145 | | 2003 | 3,076 | | 2002 | 2,983 | | 2001 | 2,883 | | 2000 | 2,783 | | 1999 | 2,670 | | 1998 | 2,533 | | 1997 | 2,375 | | 1996 | 2,212 | | 1995 | 2,065 | | 1994 | 1,971 | | 1993 | 1,909 | | 1992 | 1,833 | | 1991 | 1,735 | | 1990 | 1,628 | | 1989 | 1,542 | | 1988 | 1,481 | | 1987 | 1,415 | | 1986 | 1,341 | | 1985 | 1,267 | | 1984 | 1,213 | | 1983 | 1,188 | | 1982 | 1,172 | | 1981 | 1,158 | | 1980 | 1,142 | | 1979 | 1,122 | | 1978 | 1,101 | | 1977 | 1,073 | | 1976 | 1,036 | | 1975 | 1,001 | | 1974 | 971 | | 1973 | 943 | | 1972 | 913 | | 1971 | 879 | | 1970 | 847 | | 1969 | 813 | | 1968 | 777 | | 1967 | 759 | | 1966 | 787 | | 1965 | 840 | | 1964 | 862 | | 1963 | 853 | | 1962 | 841 | | 1961 | 828 | | 1960 | 816 |
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