Year | Value | 2022 | 64.183746611376 | 2021 | 64.736786502521 | 2020 | 65.281463063429 | 2019 | 65.822242251443 | 2018 | 66.361906591708 | 2017 | 66.902231101073 | 2016 | 67.44246903 | 2015 | 67.977304141795 | 2014 | 68.503041153642 | 2013 | 69.019626869031 | 2012 | 69.526259639479 | 2011 | 70.026022383467 | 2010 | 70.535115665192 | 2009 | 71.037821980753 | 2008 | 71.532997528652 | 2007 | 72.024211158258 | 2006 | 72.426704802178 | 2005 | 72.871174848699 | 2004 | 73.320670228042 | 2003 | 73.752147994745 | 2002 | 74.179462040129 | 2001 | 74.599073603229 | 2000 | 74.996944361619 | 1999 | 75.340941895973 | 1998 | 75.677667814695 | 1997 | 76.015360742561 | 1996 | 76.340083929943 | 1995 | 76.644102553775 | 1994 | 76.994700261051 | 1993 | 77.372297534237 | 1992 | 77.744369819426 | 1991 | 78.111504431231 | 1990 | 78.497598281155 | 1989 | 78.928693341489 | 1988 | 79.3705510029 | 1987 | 79.834775603448 | 1986 | 80.298830292481 | 1985 | 80.761284242638 | 1984 | 81.217732603221 | 1983 | 81.648526603239 | 1982 | 82.032241392327 | 1981 | 82.374372934435 | 1980 | 82.875915715544 | 1979 | 83.452715401901 | 1978 | 83.959088203877 | 1977 | 84.470829016712 | 1976 | 84.960731030869 | 1975 | 85.438197742757 | 1974 | 85.392604148953 | 1973 | 85.827767193708 | 1972 | 86.262773000556 | 1971 | 86.710121256834 | 1970 | 87.133644502044 | 1969 | 87.513513346459 | 1968 | 87.894330454058 | 1967 | 88.259716394396 | 1966 | 88.611932930994 | 1965 | 88.931516717171 | 1964 | 89.238998638785 | 1963 | 89.534912864275 | 1962 | 89.81669659164 | 1961 | 90.083320108064 | 1960 | 90.328512415268 |
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