| Year | Value | | 2024 | 800 | | 2023 | 806 | | 2022 | 804 | | 2021 | 798 | | 2020 | 789 | | 2019 | 778 | | 2018 | 770 | | 2017 | 769 | | 2016 | 767 | | 2015 | 763 | | 2014 | 761 | | 2013 | 769 | | 2012 | 791 | | 2011 | 826 | | 2010 | 866 | | 2009 | 908 | | 2008 | 948 | | 2007 | 987 | | 2006 | 1,028 | | 2005 | 1,068 | | 2004 | 1,101 | | 2003 | 1,133 | | 2002 | 1,167 | | 2001 | 1,195 | | 2000 | 1,202 | | 1999 | 1,167 | | 1998 | 1,109 | | 1997 | 1,066 | | 1996 | 1,031 | | 1995 | 996 | | 1994 | 954 | | 1993 | 909 | | 1992 | 860 | | 1991 | 813 | | 1990 | 772 | | 1989 | 727 | | 1988 | 677 | | 1987 | 624 | | 1986 | 566 | | 1985 | 520 | | 1984 | 492 | | 1983 | 462 | | 1982 | 434 | | 1981 | 411 | | 1980 | 390 | | 1979 | 375 | | 1978 | 357 | | 1977 | 338 | | 1976 | 320 | | 1975 | 310 |
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