| Year | Value | | 2022 | 7,464 | | 2021 | 7,252 | | 2020 | 7,049 | | 2019 | 6,817 | | 2018 | 6,551 | | 2017 | 6,261 | | 2016 | 5,950 | | 2015 | 5,624 | | 2014 | 5,296 | | 2013 | 4,975 | | 2012 | 4,681 | | 2011 | 4,415 | | 2010 | 4,169 | | 2009 | 3,935 | | 2008 | 3,706 | | 2007 | 3,475 | | 2006 | 3,234 | | 2005 | 2,987 | | 2004 | 2,743 | | 2003 | 2,516 | | 2002 | 2,325 | | 2001 | 2,199 | | 2000 | 2,141 | | 1999 | 2,121 | | 1998 | 2,106 | | 1997 | 2,077 | | 1996 | 2,036 | | 1995 | 1,994 | | 1994 | 1,953 | | 1993 | 1,905 | | 1992 | 1,871 | | 1991 | 1,860 | | 1990 | 1,860 | | 1989 | 1,870 | | 1988 | 1,884 | | 1987 | 1,875 | | 1986 | 1,837 | | 1985 | 1,788 | | 1984 | 1,729 | | 1983 | 1,663 | | 1982 | 1,600 | | 1981 | 1,542 | | 1980 | 1,506 | | 1979 | 1,495 | | 1978 | 1,496 | | 1977 | 1,498 | | 1976 | 1,502 | | 1975 | 1,510 | | 1974 | 1,519 | | 1973 | 1,535 | | 1972 | 1,557 | | 1971 | 1,579 | | 1970 | 1,591 | | 1969 | 1,594 | | 1968 | 1,585 | | 1967 | 1,557 | | 1966 | 1,516 | | 1965 | 1,473 | | 1964 | 1,431 | | 1963 | 1,390 | | 1962 | 1,355 | | 1961 | 1,324 | | 1960 | 1,294 |
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