Year | Value | 2022 | 74.416 | 2021 | 74.872 | 2020 | 75.33 | 2019 | 75.79 | 2018 | 76.251 | 2017 | 76.714 | 2016 | 77.177 | 2015 | 77.64 | 2014 | 78.104 | 2013 | 78.567 | 2012 | 79.03 | 2011 | 79.492 | 2010 | 79.952 | 2009 | 80.411 | 2008 | 80.862 | 2007 | 81.306 | 2006 | 81.741 | 2005 | 82.168 | 2004 | 82.587 | 2003 | 82.999 | 2002 | 83.403 | 2001 | 83.799 | 2000 | 84.187 | 1999 | 84.504 | 1998 | 84.715 | 1997 | 84.924 | 1996 | 85.131 | 1995 | 85.336 | 1994 | 85.538 | 1993 | 85.738 | 1992 | 85.935 | 1991 | 86.13 | 1990 | 86.323 | 1989 | 86.514 | 1988 | 86.702 | 1987 | 86.889 | 1986 | 87.163 | 1985 | 87.567 | 1984 | 87.959 | 1983 | 88.341 | 1982 | 88.712 | 1981 | 89.073 | 1980 | 89.424 | 1979 | 89.765 | 1978 | 90.096 | 1977 | 90.417 | 1976 | 90.729 | 1975 | 90.875 | 1974 | 90.917 | 1973 | 90.959 | 1972 | 91.001 | 1971 | 91.042 | 1970 | 91.083 | 1969 | 91.33 | 1968 | 91.708 | 1967 | 92.072 | 1966 | 92.421 | 1965 | 92.755 | 1964 | 93.076 | 1963 | 93.384 | 1962 | 93.679 | 1961 | 93.962 | 1960 | 94.232 |
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