| Year | Value | | 2022 | 5,769 | | 2021 | 5,674 | | 2020 | 5,563 | | 2019 | 5,439 | | 2018 | 5,298 | | 2017 | 5,129 | | 2016 | 4,945 | | 2015 | 4,776 | | 2014 | 4,629 | | 2013 | 4,489 | | 2012 | 4,362 | | 2011 | 4,246 | | 2010 | 4,134 | | 2009 | 3,971 | | 2008 | 3,760 | | 2007 | 3,551 | | 2006 | 3,335 | | 2005 | 3,117 | | 2004 | 2,903 | | 2003 | 2,699 | | 2002 | 2,501 | | 2001 | 2,320 | | 2000 | 2,169 | | 1999 | 2,050 | | 1998 | 1,962 | | 1997 | 1,899 | | 1996 | 1,859 | | 1995 | 1,832 | | 1994 | 1,810 | | 1993 | 1,787 | | 1992 | 1,758 | | 1991 | 1,726 | | 1990 | 1,689 | | 1989 | 1,651 | | 1988 | 1,616 | | 1987 | 1,591 | | 1986 | 1,579 | | 1985 | 1,575 | | 1984 | 1,574 | | 1983 | 1,571 | | 1982 | 1,562 | | 1981 | 1,541 | | 1980 | 1,508 | | 1979 | 1,546 | | 1978 | 1,590 | | 1977 | 1,526 | | 1976 | 1,433 | | 1975 | 1,344 | | 1974 | 1,262 | | 1973 | 1,191 | | 1972 | 1,128 | | 1971 | 1,072 | | 1970 | 1,023 | | 1969 | 976 | | 1968 | 933 | | 1967 | 892 | | 1966 | 853 | | 1965 | 813 | | 1964 | 774 | | 1963 | 739 | | 1962 | 709 | | 1961 | 684 | | 1960 | 661 |
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