| Year | Value | | 2022 | 7,021 | | 2021 | 6,710 | | 2020 | 6,414 | | 2019 | 6,143 | | 2018 | 5,902 | | 2017 | 5,689 | | 2016 | 5,496 | | 2015 | 5,315 | | 2014 | 5,142 | | 2013 | 4,978 | | 2012 | 4,824 | | 2011 | 4,683 | | 2010 | 4,563 | | 2009 | 4,457 | | 2008 | 4,355 | | 2007 | 4,259 | | 2006 | 4,166 | | 2005 | 4,075 | | 2004 | 3,987 | | 2003 | 3,895 | | 2002 | 3,803 | | 2001 | 3,708 | | 2000 | 3,604 | | 1999 | 3,499 | | 1998 | 3,410 | | 1997 | 3,314 | | 1996 | 3,191 | | 1995 | 3,061 | | 1994 | 2,937 | | 1993 | 2,806 | | 1992 | 2,685 | | 1991 | 2,597 | | 1990 | 2,529 | | 1989 | 2,472 | | 1988 | 2,414 | | 1987 | 2,355 | | 1986 | 2,294 | | 1985 | 2,229 | | 1984 | 2,165 | | 1983 | 2,111 | | 1982 | 2,067 | | 1981 | 2,038 | | 1980 | 2,023 | | 1979 | 2,087 | | 1978 | 2,156 | | 1977 | 2,121 | | 1976 | 2,052 | | 1975 | 1,984 | | 1974 | 1,921 | | 1973 | 1,859 | | 1972 | 1,799 | | 1971 | 1,745 | | 1970 | 1,692 | | 1969 | 1,644 | | 1968 | 1,600 | | 1967 | 1,558 | | 1966 | 1,517 | | 1965 | 1,475 | | 1964 | 1,430 | | 1963 | 1,384 | | 1962 | 1,336 | | 1961 | 1,288 | | 1960 | 1,240 |
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