| Year | Value | | 2022 | 3,717 | | 2021 | 3,618 | | 2020 | 3,515 | | 2019 | 3,400 | | 2018 | 3,271 | | 2017 | 3,142 | | 2016 | 3,016 | | 2015 | 2,896 | | 2014 | 2,788 | | 2013 | 2,695 | | 2012 | 2,612 | | 2011 | 2,536 | | 2010 | 2,464 | | 2009 | 2,391 | | 2008 | 2,315 | | 2007 | 2,242 | | 2006 | 2,171 | | 2005 | 2,103 | | 2004 | 2,036 | | 2003 | 1,975 | | 2002 | 1,915 | | 2001 | 1,857 | | 2000 | 1,800 | | 1999 | 1,742 | | 1998 | 1,681 | | 1997 | 1,624 | | 1996 | 1,569 | | 1995 | 1,515 | | 1994 | 1,461 | | 1993 | 1,406 | | 1992 | 1,349 | | 1991 | 1,290 | | 1990 | 1,230 | | 1989 | 1,173 | | 1988 | 1,116 | | 1987 | 1,063 | | 1986 | 1,012 | | 1985 | 960 | | 1984 | 914 | | 1983 | 873 | | 1982 | 834 | | 1981 | 801 | | 1980 | 773 | | 1979 | 749 | | 1978 | 728 | | 1977 | 710 | | 1976 | 698 | | 1975 | 689 | | 1974 | 675 | | 1973 | 657 | | 1972 | 631 | | 1971 | 603 | | 1970 | 578 | | 1969 | 561 | | 1968 | 546 | | 1967 | 533 | | 1966 | 522 | | 1965 | 511 | | 1964 | 500 | | 1963 | 488 | | 1962 | 476 | | 1961 | 464 | | 1960 | 454 |
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