| Year | Value | | 2022 | 7,417 | | 2021 | 7,141 | | 2020 | 6,732 | | 2019 | 6,233 | | 2018 | 5,768 | | 2017 | 5,346 | | 2016 | 4,983 | | 2015 | 4,675 | | 2014 | 4,441 | | 2013 | 4,249 | | 2012 | 4,049 | | 2011 | 3,849 | | 2010 | 3,676 | | 2009 | 3,533 | | 2008 | 3,385 | | 2007 | 3,215 | | 2006 | 3,051 | | 2005 | 2,898 | | 2004 | 2,750 | | 2003 | 2,623 | | 2002 | 2,514 | | 2001 | 2,398 | | 2000 | 2,264 | | 1999 | 2,136 | | 1998 | 2,032 | | 1997 | 1,935 | | 1996 | 1,839 | | 1995 | 1,744 | | 1994 | 1,644 | | 1993 | 1,542 | | 1992 | 1,452 | | 1991 | 1,373 | | 1990 | 1,309 | | 1989 | 1,271 | | 1988 | 1,226 | | 1987 | 1,158 | | 1986 | 1,084 | | 1985 | 1,020 | | 1984 | 974 | | 1983 | 948 | | 1982 | 939 | | 1981 | 937 | | 1980 | 920 | | 1979 | 876 | | 1978 | 815 | | 1977 | 744 | | 1976 | 674 | | 1975 | 614 | | 1974 | 566 | | 1973 | 529 | | 1972 | 503 | | 1971 | 487 | | 1970 | 473 | | 1969 | 458 | | 1968 | 445 | | 1967 | 435 | | 1966 | 427 | | 1965 | 420 | | 1964 | 416 | | 1963 | 421 | | 1962 | 429 | | 1961 | 434 | | 1960 | 414 |
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