Year | Value | 2021 | 65.45 | 2020 | 65.499675 | 2019 | 65.649125 | 2018 | 65.8125 | 2017 | 65.7825 | 2016 | 65.6275 | 2015 | 65.847475 | 2014 | 66.315775 | 2013 | 65.7 | 2012 | 65.6 | 2011 | 67.25 | 2010 | 65.65 | 2009 | 65.85 | 2008 | 66.7 | 2007 | 66.575 | 2006 | 67.75 | 2005 | 67.675 | 2004 | 66.15 | 2003 | 66.45 | 2002 | 66.625 | 2001 | 66.9 | 2000 | 66.175 | 1999 | 66.1 | 1998 | 66.8 | 1997 | 67.2 | 1996 | 67.9 | 1995 | 68.15 | 1994 | 67.275 | 1993 | 68.475 | 1992 | 68.9 | 1991 | 69.25 | 1990 | 69.7 | 1989 | 69.35 | 1988 | 69.675 | 1987 | 69.95 | 1986 | 70.475 | 1985 | 70.85 | 1984 | 71.375 | 1983 | 71.15 | 1982 | 72.175 | 1981 | 72.425 | 1980 | 72.625 | 1979 | 73 | 1978 | 73.025 | 1977 | 73.175 | 1976 | 73.325 | 1975 | 73.425 | 1974 | 73.3 | 1973 | 74.65 | 1972 | 73.9 | 1971 | 73.775 | 1970 | 74.375 | 1969 | 74.775 | 1968 | 75.425 | 1967 | 75.575 | 1966 | 75.675 | 1965 | 75.825 | 1964 | 76.7 | 1963 | 77.2 | 1962 | 78.525 | 1961 | 79 |
|