Year | Value | 2021 | 65.269 | 2020 | 64.977 | 2019 | 64.746 | 2018 | 64.5 | 2017 | 64.27 | 2016 | 64.057 | 2015 | 63.827 | 2014 | 63.623 | 2013 | 63.464 | 2012 | 63.373 | 2011 | 63.256 | 2010 | 63.226 | 2009 | 63.23 | 2008 | 63.236 | 2007 | 63.36 | 2006 | 63.489 | 2005 | 63.585 | 2004 | 63.695 | 2003 | 63.745 | 2002 | 63.719 | 2001 | 63.642 | 2000 | 63.275 | 1999 | 63.48 | 1998 | 63.364 | 1997 | 63.225 | 1996 | 63.034 | 1995 | 62.774 | 1994 | 62.558 | 1993 | 62.476 | 1992 | 62.383 | 1991 | 62.282 | 1990 | 62.176 | 1989 | 62.19 | 1988 | 62.161 | 1987 | 62.137 | 1986 | 62.161 | 1985 | 62.108 | 1984 | 61.93 | 1983 | 61.673 | 1982 | 61.403 | 1981 | 61.18 | 1980 | 61.015 | 1979 | 60.874 | 1978 | 60.742 | 1977 | 60.633 | 1976 | 60.486 | 1975 | 60.297 | 1974 | 60.081 | 1973 | 59.747 | 1972 | 59.352 | 1971 | 58.934 | 1970 | 58.538 | 1969 | 58.227 | 1968 | 57.919 | 1967 | 57.515 | 1966 | 57.052 | 1965 | 56.564 | 1964 | 56.049 | 1963 | 55.515 | 1962 | 54.928 | 1961 | 54.316 | 1960 | 53.821 |
|