Year | Value | 2021 | 70.419 | 2020 | 70.878 | 2019 | 71.62 | 2018 | 71.445 | 2017 | 71.377 | 2016 | 70.376 | 2015 | 70.16 | 2014 | 69.895 | 2013 | 69.034 | 2012 | 68.601 | 2011 | 67.27 | 2010 | 67.812 | 2009 | 67.765 | 2008 | 67.496 | 2007 | 66.993 | 2006 | 66.871 | 2005 | 66.06 | 2004 | 65.923 | 2003 | 65.037 | 2002 | 64.403 | 2001 | 63.739 | 2000 | 63.43 | 1999 | 63.405 | 1998 | 63.408 | 1997 | 63.331 | 1996 | 63.309 | 1995 | 63.321 | 1994 | 63.384 | 1993 | 63.441 | 1992 | 63.513 | 1991 | 63.571 | 1990 | 63.536 | 1989 | 62.018 | 1988 | 63.141 | 1987 | 62.643 | 1986 | 58.944 | 1985 | 61.278 | 1984 | 61.552 | 1983 | 61.319 | 1982 | 61.313 | 1981 | 61.091 | 1980 | 61.211 | 1979 | 61.072 | 1978 | 61.007 | 1977 | 60.582 | 1976 | 60.415 | 1975 | 60.112 | 1974 | 60.126 | 1973 | 60.3 | 1972 | 59.795 | 1971 | 59.574 | 1970 | 58.928 | 1969 | 57.138 | 1968 | 56.821 | 1967 | 55.809 | 1966 | 53.498 | 1965 | 50.357 | 1964 | 48.026 | 1963 | 47.322 | 1962 | 48.04 | 1961 | 46.258 | 1960 | 44.739 |
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