Year | Value | 2022 | 899 | 2021 | 748 | 2020 | 739 | 2019 | 732 | 2018 | 731 | 2017 | 737 | 2016 | 751 | 2015 | 765 | 2014 | 762 | 2013 | 756 | 2012 | 746 | 2011 | 740 | 2010 | 762 | 2009 | 750 | 2008 | 761 | 2007 | 753 | 2006 | 751 | 2005 | 731 | 2004 | 714 | 2003 | 701 | 2002 | 695 | 2001 | 668 | 2000 | 665 | 1999 | 653 | 1998 | 629 | 1997 | 626 | 1996 | 635 | 1995 | 625 | 1994 | 612 | 1993 | 587 | 1992 | 563 | 1991 | 550 | 1990 | 536 | 1989 | 531 | 1988 | 528 | 1987 | 524 | 1986 | 497 | 1985 | 489 | 1984 | 479 | 1983 | 468 | 1982 | 461 | 1981 | 453 | 1980 | 440 | 1979 | 424 | 1978 | 405 | 1977 | 394 | 1976 | 385 | 1975 | 375 | 1974 | 365 | 1973 | 358 | 1972 | 346 | 1971 | 330 | 1970 | 322 | 1969 | 317 | 1968 | 311 | 1967 | 305 | 1966 | 297 | 1965 | 290 | 1964 | 283 | 1963 | 275 | 1962 | 266 | 1961 | 260 | 1960 | 260 |
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