Year | Value | 2022 | 78.854 | 2021 | 78.554 | 2020 | 78.25 | 2019 | 77.942 | 2018 | 77.629 | 2017 | 77.312 | 2016 | 76.99 | 2015 | 76.663 | 2014 | 76.332 | 2013 | 75.997 | 2012 | 75.656 | 2011 | 75.31 | 2010 | 74.961 | 2009 | 74.608 | 2008 | 74.252 | 2007 | 73.892 | 2006 | 73.529 | 2005 | 73.163 | 2004 | 72.794 | 2003 | 72.421 | 2002 | 72.046 | 2001 | 71.652 | 2000 | 71.164 | 1999 | 70.669 | 1998 | 70.17 | 1997 | 69.666 | 1996 | 69.158 | 1995 | 68.644 | 1994 | 68.126 | 1993 | 67.604 | 1992 | 67.078 | 1991 | 66.585 | 1990 | 66.438 | 1989 | 66.29 | 1988 | 66.143 | 1987 | 65.994 | 1986 | 65.846 | 1985 | 65.697 | 1984 | 65.548 | 1983 | 65.399 | 1982 | 65.249 | 1981 | 65.099 | 1980 | 64.949 | 1979 | 64.798 | 1978 | 64.647 | 1977 | 64.496 | 1976 | 64.345 | 1975 | 64.193 | 1974 | 64.041 | 1973 | 63.889 | 1972 | 63.736 | 1971 | 63.412 | 1970 | 61.675 | 1969 | 59.908 | 1968 | 58.118 | 1967 | 56.3 | 1966 | 54.469 | 1965 | 52.625 | 1964 | 50.776 | 1963 | 48.92 | 1962 | 47.07 | 1961 | 45.228 | 1960 | 43.401 |
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