Year | Value | 2022 | 64.57 | 2021 | 64.361 | 2020 | 64.166 | 2019 | 63.986 | 2018 | 63.821 | 2017 | 63.67 | 2016 | 63.534 | 2015 | 63.398 | 2014 | 63.261 | 2013 | 63.125 | 2012 | 62.988 | 2011 | 62.851 | 2010 | 62.69 | 2009 | 62.495 | 2008 | 62.3 | 2007 | 62.104 | 2006 | 61.907 | 2005 | 61.711 | 2004 | 61.514 | 2003 | 61.316 | 2002 | 61.118 | 2001 | 60.799 | 2000 | 60.299 | 1999 | 59.796 | 1998 | 59.291 | 1997 | 58.785 | 1996 | 58.277 | 1995 | 57.766 | 1994 | 57.254 | 1993 | 56.74 | 1992 | 56.226 | 1991 | 55.709 | 1990 | 55.09 | 1989 | 54.318 | 1988 | 53.546 | 1987 | 52.769 | 1986 | 51.993 | 1985 | 51.215 | 1984 | 50.438 | 1983 | 49.658 | 1982 | 48.818 | 1981 | 47.888 | 1980 | 46.961 | 1979 | 46.034 | 1978 | 45.111 | 1977 | 44.191 | 1976 | 43.276 | 1975 | 42.363 | 1974 | 41.457 | 1973 | 40.892 | 1972 | 40.352 | 1971 | 39.813 | 1970 | 39.278 | 1969 | 38.744 | 1968 | 38.215 | 1967 | 37.686 | 1966 | 37.162 | 1965 | 36.64 | 1964 | 36.122 | 1963 | 35.606 | 1962 | 35.06 | 1961 | 34.466 | 1960 | 33.878 |
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