Year | Value | 2022 | 570 | 2021 | 538 | 2020 | 527 | 2019 | 518 | 2018 | 494 | 2017 | 473 | 2016 | 453 | 2015 | 431 | 2014 | 411 | 2013 | 394 | 2012 | 380 | 2011 | 364 | 2010 | 355 | 2009 | 359 | 2008 | 370 | 2007 | 377 | 2006 | 380 | 2005 | 379 | 2004 | 378 | 2003 | 373 | 2002 | 363 | 2001 | 351 | 2000 | 345 | 1999 | 361 | 1998 | 388 | 1997 | 396 | 1996 | 384 | 1995 | 359 | 1994 | 338 | 1993 | 339 | 1992 | 346 | 1991 | 343 | 1990 | 334 | 1989 | 325 | 1988 | 315 | 1987 | 303 | 1986 | 292 | 1985 | 283 | 1984 | 274 | 1983 | 267 | 1982 | 263 | 1981 | 259 | 1980 | 254 | 1979 | 248 | 1978 | 240 | 1977 | 231 | 1976 | 224 | 1975 | 218 | 1974 | 212 | 1973 | 204 | 1972 | 198 | 1971 | 193 | 1970 | 188 | 1969 | 183 | 1968 | 178 | 1967 | 173 | 1966 | 168 | 1965 | 165 | 1964 | 162 | 1963 | 159 | 1962 | 154 | 1961 | 147 | 1960 | 139 |
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