| Year | Value | | 2022 | 3,864 | | 2021 | 3,909 | | 2020 | 3,993 | | 2019 | 4,103 | | 2018 | 4,225 | | 2017 | 4,360 | | 2016 | 4,267 | | 2015 | 3,946 | | 2014 | 3,650 | | 2013 | 3,381 | | 2012 | 3,137 | | 2011 | 2,926 | | 2010 | 2,755 | | 2009 | 2,625 | | 2008 | 2,532 | | 2007 | 2,472 | | 2006 | 2,441 | | 2005 | 2,354 | | 2004 | 2,104 | | 2003 | 1,781 | | 2002 | 1,503 | | 2001 | 1,272 | | 2000 | 1,081 | | 1999 | 928 | | 1998 | 837 | | 1997 | 794 | | 1996 | 755 | | 1995 | 718 | | 1994 | 691 | | 1993 | 674 | | 1992 | 689 | | 1991 | 699 | | 1990 | 676 | | 1989 | 650 | | 1988 | 624 | | 1987 | 597 | | 1986 | 571 | | 1985 | 548 | | 1984 | 525 | | 1983 | 506 | | 1982 | 488 | | 1981 | 470 | | 1980 | 450 | | 1979 | 430 | | 1978 | 410 | | 1977 | 393 | | 1976 | 377 | | 1975 | 362 | | 1974 | 347 | | 1973 | 331 | | 1972 | 317 | | 1971 | 304 | | 1970 | 292 | | 1969 | 282 | | 1968 | 273 | | 1967 | 266 | | 1966 | 257 | | 1965 | 246 | | 1964 | 236 | | 1963 | 225 | | 1962 | 210 | | 1961 | 199 | | 1960 | 192 |
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