| Year | Value | | 2022 | 8,059 | | 2021 | 7,715 | | 2020 | 7,377 | | 2019 | 7,025 | | 2018 | 6,657 | | 2017 | 6,284 | | 2016 | 5,953 | | 2015 | 5,660 | | 2014 | 5,393 | | 2013 | 5,185 | | 2012 | 5,026 | | 2011 | 4,904 | | 2010 | 4,827 | | 2009 | 4,777 | | 2008 | 4,715 | | 2007 | 4,645 | | 2006 | 4,528 | | 2005 | 4,341 | | 2004 | 4,143 | | 2003 | 3,954 | | 2002 | 3,782 | | 2001 | 3,631 | | 2000 | 3,489 | | 1999 | 3,344 | | 1998 | 3,187 | | 1997 | 3,017 | | 1996 | 2,844 | | 1995 | 2,676 | | 1994 | 2,517 | | 1993 | 2,375 | | 1992 | 2,252 | | 1991 | 2,150 | | 1990 | 2,066 | | 1989 | 1,989 | | 1988 | 1,910 | | 1987 | 1,825 | | 1986 | 1,727 | | 1985 | 1,619 | | 1984 | 1,518 | | 1983 | 1,414 | | 1982 | 1,334 | | 1981 | 1,308 | | 1980 | 1,318 | | 1979 | 1,347 | | 1978 | 1,382 | | 1977 | 1,400 | | 1976 | 1,386 | | 1975 | 1,348 | | 1974 | 1,292 | | 1973 | 1,228 | | 1972 | 1,165 | | 1971 | 1,125 | | 1970 | 1,105 | | 1969 | 1,087 | | 1968 | 1,068 | | 1967 | 1,047 | | 1966 | 1,018 | | 1965 | 984 | | 1964 | 944 | | 1963 | 898 | | 1962 | 854 | | 1961 | 824 | | 1960 | 808 |
|