| Year | Value | | 2022 | 4,891 | | 2021 | 4,721 | | 2020 | 4,606 | | 2019 | 4,518 | | 2018 | 4,443 | | 2017 | 4,373 | | 2016 | 4,310 | | 2015 | 4,255 | | 2014 | 4,188 | | 2013 | 4,102 | | 2012 | 4,014 | | 2011 | 3,918 | | 2010 | 3,815 | | 2009 | 3,720 | | 2008 | 3,639 | | 2007 | 3,566 | | 2006 | 3,496 | | 2005 | 3,431 | | 2004 | 3,365 | | 2003 | 3,295 | | 2002 | 3,230 | | 2001 | 3,170 | | 2000 | 3,117 | | 1999 | 3,035 | | 1998 | 2,934 | | 1997 | 2,847 | | 1996 | 2,767 | | 1995 | 2,690 | | 1994 | 2,615 | | 1993 | 2,542 | | 1992 | 2,472 | | 1991 | 2,407 | | 1990 | 2,347 | | 1989 | 2,291 | | 1988 | 2,242 | | 1987 | 2,203 | | 1986 | 2,165 | | 1985 | 2,112 | | 1984 | 2,047 | | 1983 | 1,984 | | 1982 | 1,923 | | 1981 | 1,861 | | 1980 | 1,801 | | 1979 | 1,744 | | 1978 | 1,692 | | 1977 | 1,651 | | 1976 | 1,630 | | 1975 | 1,610 | | 1974 | 1,577 | | 1973 | 1,535 | | 1972 | 1,482 | | 1971 | 1,420 | | 1970 | 1,357 | | 1969 | 1,302 | | 1968 | 1,258 | | 1967 | 1,217 | | 1966 | 1,180 | | 1965 | 1,143 | | 1964 | 1,110 | | 1963 | 1,080 | | 1962 | 1,052 | | 1961 | 1,025 | | 1960 | 1,001 |
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