Year | Value | 2021 | 70.984 | 2020 | 73.289 | 2019 | 76.543 | 2018 | 76.534 | 2017 | 76.525 | 2016 | 76.544 | 2015 | 76.332 | 2014 | 76.097 | 2013 | 75.913 | 2012 | 75.707 | 2011 | 75.106 | 2010 | 74.639 | 2009 | 72.585 | 2008 | 72.525 | 2007 | 72.389 | 2006 | 72.407 | 2005 | 72.315 | 2004 | 72.267 | 2003 | 72.1 | 2002 | 71.963 | 2001 | 71.913 | 2000 | 71.497 | 1999 | 71.202 | 1998 | 70.981 | 1997 | 70.501 | 1996 | 70.283 | 1995 | 70.108 | 1994 | 69.5 | 1993 | 69.262 | 1992 | 68.722 | 1991 | 68.135 | 1990 | 67.819 | 1989 | 67.141 | 1988 | 66.589 | 1987 | 65.9 | 1986 | 64.889 | 1985 | 64.106 | 1984 | 63.237 | 1983 | 62.111 | 1982 | 60.824 | 1981 | 59.532 | 1980 | 58.346 | 1979 | 57.112 | 1978 | 55.655 | 1977 | 54.216 | 1976 | 53.155 | 1975 | 50.859 | 1974 | 49.645 | 1973 | 48.432 | 1972 | 47.114 | 1971 | 46.98 | 1970 | 45.707 | 1969 | 44.742 | 1968 | 43.633 | 1967 | 42.421 | 1966 | 41.195 | 1965 | 40.021 | 1964 | 38.868 | 1963 | 37.566 | 1962 | 36.346 | 1961 | 34.971 | 1960 | 33.578 |
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