Year | Value | 2022 | 63.573 | 2021 | 63.431 | 2020 | 63.313 | 2019 | 63.219 | 2018 | 63.149 | 2017 | 63.103 | 2016 | 63.082 | 2015 | 63.085 | 2014 | 63.112 | 2013 | 63.164 | 2012 | 63.24 | 2011 | 63.34 | 2010 | 63.44 | 2009 | 63.54 | 2008 | 63.64 | 2007 | 63.739 | 2006 | 63.839 | 2005 | 63.938 | 2004 | 64.038 | 2003 | 64.137 | 2002 | 64.236 | 2001 | 64.385 | 2000 | 64.666 | 1999 | 64.947 | 1998 | 65.226 | 1997 | 65.504 | 1996 | 65.781 | 1995 | 66.057 | 1994 | 66.332 | 1993 | 66.606 | 1992 | 66.878 | 1991 | 67.15 | 1990 | 67.421 | 1989 | 67.69 | 1988 | 67.706 | 1987 | 67.501 | 1986 | 67.296 | 1985 | 67.09 | 1984 | 66.883 | 1983 | 66.675 | 1982 | 66.467 | 1981 | 66.259 | 1980 | 66.05 | 1979 | 65.839 | 1978 | 65.419 | 1977 | 64.821 | 1976 | 64.219 | 1975 | 63.611 | 1974 | 63 | 1973 | 62.225 | 1972 | 61.445 | 1971 | 60.657 | 1970 | 59.864 | 1969 | 59.042 | 1968 | 58.195 | 1967 | 57.341 | 1966 | 56.483 | 1965 | 55.622 | 1964 | 54.758 | 1963 | 53.889 | 1962 | 53.019 | 1961 | 52.147 | 1960 | 51.275 |
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