| Year | Value | | 2022 | 5,196 | | 2021 | 5,069 | | 2020 | 4,961 | | 2019 | 4,867 | | 2018 | 4,770 | | 2017 | 4,635 | | 2016 | 4,471 | | 2015 | 4,303 | | 2014 | 4,121 | | 2013 | 3,919 | | 2012 | 3,704 | | 2011 | 3,487 | | 2010 | 3,278 | | 2009 | 3,088 | | 2008 | 2,931 | | 2007 | 2,799 | | 2006 | 2,679 | | 2005 | 2,571 | | 2004 | 2,479 | | 2003 | 2,402 | | 2002 | 2,346 | | 2001 | 2,300 | | 2000 | 2,257 | | 1999 | 2,208 | | 1998 | 2,148 | | 1997 | 2,078 | | 1996 | 2,033 | | 1995 | 2,026 | | 1994 | 2,021 | | 1993 | 2,006 | | 1992 | 1,979 | | 1991 | 1,946 | | 1990 | 1,901 | | 1989 | 1,845 | | 1988 | 1,794 | | 1987 | 1,748 | | 1986 | 1,667 | | 1985 | 1,565 | | 1984 | 1,497 | | 1983 | 1,453 | | 1982 | 1,419 | | 1981 | 1,388 | | 1980 | 1,360 | | 1979 | 1,324 | | 1978 | 1,284 | | 1977 | 1,247 | | 1976 | 1,210 | | 1975 | 1,165 | | 1974 | 1,113 | | 1973 | 1,061 | | 1972 | 1,007 | | 1971 | 951 | | 1970 | 897 | | 1969 | 849 | | 1968 | 808 | | 1967 | 771 | | 1966 | 727 | | 1965 | 686 | | 1964 | 668 | | 1963 | 659 | | 1962 | 654 | | 1961 | 650 | | 1960 | 650 |
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