Year | Value | 2022 | 1,028 | 2021 | 981 | 2020 | 947 | 2019 | 913 | 2018 | 879 | 2017 | 859 | 2016 | 853 | 2015 | 857 | 2014 | 869 | 2013 | 883 | 2012 | 890 | 2011 | 895 | 2010 | 899 | 2009 | 903 | 2008 | 903 | 2007 | 901 | 2006 | 894 | 2005 | 883 | 2004 | 869 | 2003 | 856 | 2002 | 844 | 2001 | 837 | 2000 | 839 | 1999 | 840 | 1998 | 839 | 1997 | 835 | 1996 | 826 | 1995 | 813 | 1994 | 795 | 1993 | 772 | 1992 | 747 | 1991 | 724 | 1990 | 703 | 1989 | 684 | 1988 | 662 | 1987 | 641 | 1986 | 624 | 1985 | 613 | 1984 | 604 | 1983 | 598 | 1982 | 595 | 1981 | 585 | 1980 | 568 | 1979 | 552 | 1978 | 538 | 1977 | 527 | 1976 | 517 | 1975 | 508 | 1974 | 501 | 1973 | 496 | 1972 | 491 | 1971 | 487 | 1970 | 481 | 1969 | 470 | 1968 | 455 | 1967 | 436 | 1966 | 415 | 1965 | 393 | 1964 | 374 | 1963 | 357 | 1962 | 341 | 1961 | 327 | 1960 | 319 |
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