| Year | Value | | 2022 | 7,159 | | 2021 | 7,746 | | 2020 | 8,433 | | 2019 | 8,661 | | 2018 | 8,419 | | 2017 | 8,070 | | 2016 | 7,661 | | 2015 | 7,203 | | 2014 | 6,755 | | 2013 | 6,336 | | 2012 | 5,966 | | 2011 | 5,701 | | 2010 | 5,515 | | 2009 | 5,331 | | 2008 | 5,119 | | 2007 | 4,916 | | 2006 | 4,755 | | 2005 | 4,634 | | 2004 | 4,541 | | 2003 | 4,463 | | 2002 | 4,381 | | 2001 | 4,254 | | 2000 | 4,073 | | 1999 | 3,861 | | 1998 | 3,650 | | 1997 | 3,469 | | 1996 | 3,305 | | 1995 | 3,144 | | 1994 | 2,994 | | 1993 | 2,849 | | 1992 | 2,704 | | 1991 | 2,562 | | 1990 | 2,423 | | 1989 | 2,288 | | 1988 | 2,161 | | 1987 | 2,042 | | 1986 | 1,932 | | 1985 | 1,830 | | 1984 | 1,738 | | 1983 | 1,653 | | 1982 | 1,572 | | 1981 | 1,499 | | 1980 | 1,432 | | 1979 | 1,367 | | 1978 | 1,307 | | 1977 | 1,251 | | 1976 | 1,201 | | 1975 | 1,160 | | 1974 | 1,127 | | 1973 | 1,099 | | 1972 | 1,078 | | 1971 | 1,059 | | 1970 | 1,040 | | 1969 | 1,019 | | 1968 | 998 | | 1967 | 977 | | 1966 | 957 | | 1965 | 936 | | 1964 | 913 | | 1963 | 891 | | 1962 | 869 | | 1961 | 846 | | 1960 | 822 |
|