Year | Value | 2022 | 1,787 | 2021 | 1,672 | 2020 | 1,575 | 2019 | 1,501 | 2018 | 1,453 | 2017 | 1,425 | 2016 | 1,408 | 2015 | 1,385 | 2014 | 1,348 | 2013 | 1,295 | 2012 | 1,225 | 2011 | 1,145 | 2010 | 1,082 | 2009 | 1,035 | 2008 | 998 | 2007 | 979 | 2006 | 970 | 2005 | 972 | 2004 | 977 | 2003 | 970 | 2002 | 957 | 2001 | 942 | 2000 | 917 | 1999 | 886 | 1998 | 861 | 1997 | 844 | 1996 | 837 | 1995 | 838 | 1994 | 847 | 1993 | 861 | 1992 | 876 | 1991 | 885 | 1990 | 882 | 1989 | 869 | 1988 | 852 | 1987 | 827 | 1986 | 797 | 1985 | 767 | 1984 | 740 | 1983 | 718 | 1982 | 704 | 1981 | 701 | 1980 | 702 | 1979 | 711 | 1978 | 718 | 1977 | 712 | 1976 | 709 | 1975 | 715 | 1974 | 721 | 1973 | 707 | 1972 | 675 | 1971 | 647 | 1970 | 633 | 1969 | 628 | 1968 | 632 | 1967 | 645 | 1966 | 657 | 1965 | 662 | 1964 | 656 | 1963 | 649 | 1962 | 635 | 1961 | 614 | 1960 | 591 |
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