Year | Value | 2021 | 780 | 2020 | 800 | 2019 | 840 | 2018 | 840 | 2017 | 840 | 2016 | 870 | 2015 | 870 | 2014 | 882 | 2013 | 832 | 2012 | 732 | 2011 | 800 | 2010 | 783 | 2009 | 804 | 2008 | 708 | 2007 | 700 | 2006 | 728 | 2005 | 728 | 2004 | 775 | 2003 | 805 | 2002 | 740 | 2001 | 860 | 2000 | 880 | 1999 | 880 | 1998 | 880 | 1997 | 880 | 1996 | 890 | 1995 | 890 | 1994 | 890 | 1993 | 890 | 1992 | 890 | 1991 | 890 | 1990 | 880 | 1989 | 880 | 1988 | 880 | 1987 | 880 | 1986 | 840 | 1985 | 810 | 1984 | 770 | 1983 | 750 | 1982 | 750 | 1981 | 730 | 1980 | 690 | 1979 | 640 | 1978 | 620 | 1977 | 610 | 1976 | 590 | 1975 | 580 | 1974 | 570 | 1973 | 560 | 1972 | 530 | 1971 | 520 | 1970 | 480 | 1969 | 470 | 1968 | 430 | 1967 | 430 | 1966 | 440 | 1965 | 470 | 1964 | 460 | 1963 | 410 | 1962 | 420 | 1961 | 410 |
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