| Year | Value | | 2022 | 2,558 | | 2021 | 2,459 | | 2020 | 2,352 | | 2019 | 2,231 | | 2018 | 2,103 | | 2017 | 1,969 | | 2016 | 1,831 | | 2015 | 1,692 | | 2014 | 1,554 | | 2013 | 1,425 | | 2012 | 1,304 | | 2011 | 1,186 | | 2010 | 1,079 | | 2009 | 1,014 | | 2008 | 981 | | 2007 | 943 | | 2006 | 900 | | 2005 | 857 | | 2004 | 813 | | 2003 | 769 | | 2002 | 728 | | 2001 | 691 | | 2000 | 653 | | 1999 | 622 | | 1998 | 596 | | 1997 | 568 | | 1996 | 545 | | 1995 | 519 | | 1994 | 491 | | 1993 | 465 | | 1992 | 445 | | 1991 | 425 | | 1990 | 405 | | 1989 | 379 | | 1988 | 356 | | 1987 | 340 | | 1986 | 327 | | 1985 | 309 | | 1984 | 285 | | 1983 | 272 | | 1982 | 257 | | 1981 | 233 | | 1980 | 209 | | 1979 | 184 | | 1978 | 163 | | 1977 | 148 | | 1976 | 138 | | 1975 | 134 | | 1974 | 129 | | 1973 | 124 | | 1972 | 122 | | 1971 | 121 | | 1970 | 116 | | 1969 | 105 | | 1968 | 87 | | 1967 | 70 | | 1966 | 57 | | 1965 | 49 | | 1964 | 39 | | 1963 | 31 | | 1962 | 26 | | 1961 | 25 | | 1960 | 24 |
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