Year | Value | 2022 | 1,658 | 2021 | 1,587 | 2020 | 1,530 | 2019 | 1,487 | 2018 | 1,456 | 2017 | 1,427 | 2016 | 1,398 | 2015 | 1,363 | 2014 | 1,333 | 2013 | 1,308 | 2012 | 1,287 | 2011 | 1,270 | 2010 | 1,256 | 2009 | 1,237 | 2008 | 1,212 | 2007 | 1,180 | 2006 | 1,140 | 2005 | 1,100 | 2004 | 1,063 | 2003 | 1,025 | 2002 | 997 | 2001 | 975 | 2000 | 938 | 1999 | 886 | 1998 | 833 | 1997 | 784 | 1996 | 736 | 1995 | 693 | 1994 | 673 | 1993 | 683 | 1992 | 710 | 1991 | 729 | 1990 | 745 | 1989 | 767 | 1988 | 776 | 1987 | 769 | 1986 | 747 | 1985 | 714 | 1984 | 675 | 1983 | 643 | 1982 | 620 | 1981 | 603 | 1980 | 597 | 1979 | 598 | 1978 | 599 | 1977 | 595 | 1976 | 585 | 1975 | 572 | 1974 | 556 | 1973 | 538 | 1972 | 516 | 1971 | 497 | 1970 | 479 | 1969 | 462 | 1968 | 447 | 1967 | 435 | 1966 | 426 | 1965 | 419 | 1964 | 410 | 1963 | 398 | 1962 | 391 | 1961 | 384 | 1960 | 371 |
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