Year | Value | 2022 | 75.755 | 2021 | 75.073 | 2020 | 74.354 | 2019 | 73.598 | 2018 | 72.803 | 2017 | 71.968 | 2016 | 71.092 | 2015 | 70.174 | 2014 | 69.213 | 2013 | 68.208 | 2012 | 67.16 | 2011 | 66.064 | 2010 | 64.952 | 2009 | 63.823 | 2008 | 62.68 | 2007 | 61.52 | 2006 | 60.348 | 2005 | 59.165 | 2004 | 57.972 | 2003 | 56.766 | 2002 | 55.555 | 2001 | 54.377 | 2000 | 53.424 | 1999 | 52.467 | 1998 | 51.509 | 1997 | 50.55 | 1996 | 49.592 | 1995 | 48.631 | 1994 | 47.673 | 1993 | 46.717 | 1992 | 45.764 | 1991 | 44.793 | 1990 | 43.648 | 1989 | 42.511 | 1988 | 41.382 | 1987 | 40.26 | 1986 | 39.149 | 1985 | 38.049 | 1984 | 36.963 | 1983 | 35.887 | 1982 | 34.826 | 1981 | 33.857 | 1980 | 33.482 | 1979 | 33.109 | 1978 | 32.738 | 1977 | 32.37 | 1976 | 32.004 | 1975 | 31.639 | 1974 | 31.277 | 1973 | 30.917 | 1972 | 30.561 | 1971 | 30.205 | 1970 | 29.518 | 1969 | 27.861 | 1968 | 26.264 | 1967 | 24.724 | 1966 | 23.247 | 1965 | 21.833 | 1964 | 20.484 | 1963 | 19.194 | 1962 | 17.969 | 1961 | 16.805 | 1960 | 16.073 |
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