Year | Value | 2021 | 71.514634146342 | 2020 | 73.658536585366 | 2019 | 75.112195121951 | 2018 | 74.963414634146 | 2017 | 74.814634146342 | 2016 | 74.812195121951 | 2015 | 74.614634146342 | 2014 | 74.465853658537 | 2013 | 74.860975609756 | 2012 | 74.314634146342 | 2011 | 74.163414634146 | 2010 | 73.512195121951 | 2009 | 73.412195121951 | 2008 | 72.963414634146 | 2007 | 72.663414634146 | 2006 | 72.612195121951 | 2005 | 72.560975609756 | 2004 | 72.563414634146 | 2003 | 72.065853658537 | 2002 | 71.865853658537 | 2001 | 71.768292682927 | 2000 | 71.663414634146 | 1999 | 71.412195121951 | 1998 | 71.060975609756 | 1997 | 70.351219512195 | 1996 | 70.897317073171 | 1995 | 71.053414634146 | 1994 | 71.208780487805 | 1993 | 71.346829268293 | 1992 | 71.494390243902 | 1991 | 71.560975609756 | 1990 | 71.641463414634 | 1989 | 71.72243902439 | 1988 | 71.604390243902 | 1987 | 71.526829268293 | 1986 | 71.730731707317 | 1985 | 71.228048780488 | 1984 | 71.499756097561 | 1983 | 71.386341463415 | 1982 | 71.186097560976 | 1981 | 71.571951219512 | 1980 | 71.15756097561 | 1979 | 71.308292682927 | 1978 | 71.184634146341 | 1977 | 70.816097560976 | 1976 | 71.39487804878 | 1975 | 71.049756097561 | 1974 | 71.208048780488 | 1973 | 71.342195121951 | 1972 | 70.899512195122 | 1971 | 70.873658536585 | 1970 | 71.256341463415 | 1969 | 70.43 | 1968 | 71.22512195122 | 1967 | 70.413902439024 | 1966 | 71.223414634146 | 1965 | 71.293902439024 | 1964 | 71.121219512195 | 1963 | 70.309268292683 | 1962 | 69.491951219512 | 1961 | 70.195609756098 | 1960 | 69.24756097561 |
|