Year | Value | 2022 | 712 | 2021 | 693 | 2020 | 673 | 2019 | 686 | 2018 | 713 | 2017 | 715 | 2016 | 709 | 2015 | 694 | 2014 | 673 | 2013 | 651 | 2012 | 632 | 2011 | 634 | 2010 | 640 | 2009 | 635 | 2008 | 622 | 2007 | 607 | 2006 | 601 | 2005 | 601 | 2004 | 596 | 2003 | 584 | 2002 | 566 | 2001 | 544 | 2000 | 521 | 1999 | 504 | 1998 | 496 | 1997 | 488 | 1996 | 482 | 1995 | 471 | 1994 | 453 | 1993 | 437 | 1992 | 425 | 1991 | 415 | 1990 | 411 | 1989 | 403 | 1988 | 385 | 1987 | 359 | 1986 | 339 | 1985 | 332 | 1984 | 330 | 1983 | 333 | 1982 | 337 | 1981 | 338 | 1980 | 333 | 1979 | 329 | 1978 | 322 | 1977 | 314 | 1976 | 303 | 1975 | 289 | 1974 | 274 | 1973 | 263 | 1972 | 257 | 1971 | 250 | 1970 | 245 | 1969 | 242 | 1968 | 239 | 1967 | 238 | 1966 | 234 | 1965 | 229 | 1964 | 226 | 1963 | 224 | 1962 | 222 | 1961 | 221 | 1960 | 219 |
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