Year | Value | 2022 | 874 | 2021 | 852 | 2020 | 836 | 2019 | 816 | 2018 | 791 | 2017 | 760 | 2016 | 725 | 2015 | 690 | 2014 | 662 | 2013 | 646 | 2012 | 645 | 2011 | 653 | 2010 | 658 | 2009 | 651 | 2008 | 633 | 2007 | 597 | 2006 | 553 | 2005 | 520 | 2004 | 501 | 2003 | 489 | 2002 | 492 | 2001 | 512 | 2000 | 536 | 1999 | 556 | 1998 | 567 | 1997 | 565 | 1996 | 555 | 1995 | 534 | 1994 | 508 | 1993 | 487 | 1992 | 472 | 1991 | 461 | 1990 | 458 | 1989 | 461 | 1988 | 459 | 1987 | 454 | 1986 | 448 | 1985 | 441 | 1984 | 432 | 1983 | 427 | 1982 | 422 | 1981 | 420 | 1980 | 417 | 1979 | 408 | 1978 | 405 | 1977 | 410 | 1976 | 407 | 1975 | 400 | 1974 | 401 | 1973 | 415 | 1972 | 431 | 1971 | 439 | 1970 | 436 | 1969 | 427 | 1968 | 423 | 1967 | 424 | 1966 | 418 | 1965 | 404 | 1964 | 389 | 1963 | 375 | 1962 | 369 | 1961 | 368 | 1960 | 371 |
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