Year | Value | 2022 | 57.221 | 2021 | 57.417 | 2020 | 57.602 | 2019 | 57.775 | 2018 | 57.936 | 2017 | 58.086 | 2016 | 58.223 | 2015 | 58.362 | 2014 | 58.499 | 2013 | 58.637 | 2012 | 58.775 | 2011 | 58.912 | 2010 | 59.074 | 2009 | 59.269 | 2008 | 59.464 | 2007 | 59.659 | 2006 | 59.853 | 2005 | 60.219 | 2004 | 60.753 | 2003 | 61.286 | 2002 | 61.978 | 2001 | 62.825 | 2000 | 63.663 | 1999 | 64.14 | 1998 | 64.346 | 1997 | 64.646 | 1996 | 65.178 | 1995 | 65.929 | 1994 | 66.67 | 1993 | 67.404 | 1992 | 68.128 | 1991 | 68.846 | 1990 | 69.406 | 1989 | 69.568 | 1988 | 69.485 | 1987 | 69.402 | 1986 | 69.318 | 1985 | 69.234 | 1984 | 69.151 | 1983 | 69.067 | 1982 | 68.983 | 1981 | 68.899 | 1980 | 68.814 | 1979 | 68.73 | 1978 | 68.645 | 1977 | 68.693 | 1976 | 69.185 | 1975 | 69.674 | 1974 | 70.158 | 1973 | 70.638 | 1972 | 71.112 | 1971 | 71.583 | 1970 | 72.049 | 1969 | 72.476 | 1968 | 72.878 | 1967 | 73.277 | 1966 | 73.672 | 1965 | 74.447 | 1964 | 75.331 | 1963 | 76.195 | 1962 | 77.038 | 1961 | 77.859 | 1960 | 78.617 |
|