Year | Value | 2022 | 78.457 | 2021 | 77.959 | 2020 | 75.912 | 2019 | 77.76 | 2018 | 77.205 | 2017 | 76.821 | 2016 | 76.803 | 2015 | 76.824 | 2014 | 76.467 | 2013 | 75.84 | 2012 | 75.478 | 2011 | 75.236 | 2010 | 74.873 | 2009 | 74.864 | 2008 | 74.071 | 2007 | 73.735 | 2006 | 73.379 | 2005 | 73.075 | 2004 | 72.812 | 2003 | 72.25 | 2002 | 72.559 | 2001 | 72.197 | 2000 | 71.949 | 1999 | 71.414 | 1998 | 71.262 | 1997 | 70.925 | 1996 | 70.4 | 1995 | 69.518 | 1994 | 69.169 | 1993 | 69.202 | 1992 | 69.307 | 1991 | 69.007 | 1990 | 68.517 | 1989 | 68.102 | 1988 | 67.901 | 1987 | 67.239 | 1986 | 66.913 | 1985 | 65.195 | 1984 | 63.268 | 1983 | 61.288 | 1982 | 59.171 | 1981 | 56.81 | 1980 | 54.629 | 1979 | 52.923 | 1978 | 51.386 | 1977 | 50.136 | 1976 | 48.781 | 1975 | 47.693 | 1974 | 46.74 | 1973 | 45.6 | 1972 | 44.885 | 1971 | 44.156 | 1970 | 43.625 | 1969 | 43.235 | 1968 | 43.075 | 1967 | 43.043 | 1966 | 43.042 | 1965 | 43.279 | 1964 | 43.357 | 1963 | 43.476 | 1962 | 42.569 | 1961 | 43.467 | 1960 | 43.608 |
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