Year | Value | 2022 | 1,481 | 2021 | 1,357 | 2020 | 1,247 | 2019 | 1,162 | 2018 | 1,102 | 2017 | 1,063 | 2016 | 1,041 | 2015 | 1,026 | 2014 | 1,007 | 2013 | 981 | 2012 | 944 | 2011 | 904 | 2010 | 871 | 2009 | 845 | 2008 | 825 | 2007 | 820 | 2006 | 819 | 2005 | 818 | 2004 | 815 | 2003 | 798 | 2002 | 766 | 2001 | 736 | 2000 | 705 | 1999 | 673 | 1998 | 658 | 1997 | 663 | 1996 | 684 | 1995 | 713 | 1994 | 743 | 1993 | 759 | 1992 | 758 | 1991 | 742 | 1990 | 710 | 1989 | 674 | 1988 | 644 | 1987 | 622 | 1986 | 608 | 1985 | 600 | 1984 | 598 | 1983 | 598 | 1982 | 594 | 1981 | 587 | 1980 | 580 | 1979 | 574 | 1978 | 568 | 1977 | 569 | 1976 | 583 | 1975 | 604 | 1974 | 617 | 1973 | 602 | 1972 | 568 | 1971 | 545 | 1970 | 536 | 1969 | 539 | 1968 | 546 | 1967 | 553 | 1966 | 560 | 1965 | 562 | 1964 | 560 | 1963 | 554 | 1962 | 542 | 1961 | 525 | 1960 | 506 |
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