| Year | Value | | 2022 | 9,249 | | 2021 | 8,766 | | 2020 | 8,340 | | 2019 | 7,926 | | 2018 | 7,565 | | 2017 | 7,201 | | 2016 | 6,776 | | 2015 | 6,345 | | 2014 | 5,965 | | 2013 | 5,627 | | 2012 | 5,398 | | 2011 | 5,258 | | 2010 | 5,051 | | 2009 | 4,838 | | 2008 | 4,723 | | 2007 | 4,638 | | 2006 | 4,546 | | 2005 | 4,498 | | 2004 | 4,453 | | 2003 | 4,337 | | 2002 | 4,173 | | 2001 | 4,009 | | 2000 | 3,874 | | 1999 | 3,741 | | 1998 | 3,605 | | 1997 | 3,473 | | 1996 | 3,326 | | 1995 | 3,147 | | 1994 | 2,990 | | 1993 | 2,865 | | 1992 | 2,729 | | 1991 | 2,616 | | 1990 | 2,540 | | 1989 | 2,484 | | 1988 | 2,451 | | 1987 | 2,429 | | 1986 | 2,422 | | 1985 | 2,419 | | 1984 | 2,429 | | 1983 | 2,457 | | 1982 | 2,483 | | 1981 | 2,490 | | 1980 | 2,462 | | 1979 | 2,405 | | 1978 | 2,341 | | 1977 | 2,276 | | 1976 | 2,205 | | 1975 | 2,134 | | 1974 | 2,069 | | 1973 | 1,995 | | 1972 | 1,901 | | 1971 | 1,790 | | 1970 | 1,674 | | 1969 | 1,559 | | 1968 | 1,452 | | 1967 | 1,352 | | 1966 | 1,256 | | 1965 | 1,165 | | 1964 | 1,084 | | 1963 | 1,011 | | 1962 | 946 | | 1961 | 893 | | 1960 | 848 |
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