Year | Value | 2022 | 946 | 2021 | 885 | 2020 | 801 | 2019 | 717 | 2018 | 637 | 2017 | 558 | 2016 | 504 | 2015 | 467 | 2014 | 441 | 2013 | 425 | 2012 | 418 | 2011 | 416 | 2010 | 422 | 2009 | 449 | 2008 | 486 | 2007 | 507 | 2006 | 514 | 2005 | 507 | 2004 | 495 | 2003 | 484 | 2002 | 474 | 2001 | 467 | 2000 | 462 | 1999 | 461 | 1998 | 468 | 1997 | 489 | 1996 | 519 | 1995 | 556 | 1994 | 557 | 1993 | 502 | 1992 | 438 | 1991 | 403 | 1990 | 393 | 1989 | 384 | 1988 | 377 | 1987 | 370 | 1986 | 362 | 1985 | 355 | 1984 | 346 | 1983 | 336 | 1982 | 324 | 1981 | 313 | 1980 | 303 | 1979 | 296 | 1978 | 290 | 1977 | 287 | 1976 | 287 | 1975 | 286 | 1974 | 282 | 1973 | 275 | 1972 | 269 | 1971 | 263 | 1970 | 258 | 1969 | 255 | 1968 | 253 | 1967 | 249 | 1966 | 245 | 1965 | 240 | 1964 | 235 | 1963 | 231 | 1962 | 225 | 1961 | 217 | 1960 | 208 |
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