Year | Value | 2022 | 66.84798997712 | 2021 | 64.117799335015 | 2020 | 64.430278727623 | 2019 | 65.710483164416 | 2018 | 64.075099650057 | 2017 | 62.964445898569 | 2016 | 63.195823296643 | 2015 | 63.624084480505 | 2014 | 65.161121532784 | 2013 | 65.482635448869 | 2012 | 65.953571369548 | 2011 | 65.571431163338 | 2010 | 64.640009097156 | 2009 | 66.331084383369 | 2008 | 66.582543223044 | 2007 | 65.918815792299 | 2006 | 66.401362766464 | 2005 | 65.179563836274 | 2004 | 63.981364960913 | 2003 | 66.218841246052 | 2002 | 67.837413425291 | 2001 | 67.155303524802 | 2000 | 65.400107790503 | 1999 | 63.688712374441 | 1998 | 61.71758324828 | 1997 | 63.6095673483 | 1996 | 63.639549199156 | 1995 | 62.001680592271 | 1994 | 62.027058734464 | 1993 | 61.863790776927 | 1992 | 61.988327481941 | 1991 | 61.084430910285 | 1990 | 61.202645443023 | 1989 | 61.35789840641 | 1988 | 58.795079547408 | 1987 | 60.74661990603 | 1986 | 63.511571498207 | 1985 | 66.562464186307 | 1984 | 67.1057737943 | 1983 | 69.573634586318 | 1982 | 73.365673647939 | 1981 | 74.849304808958 | 1980 | 74.628383566058 | 1979 | 69.824672939884 | 1978 | 69.60981136576 | 1977 | 71.744025451282 | 1976 | 75.170664971533 | 1975 | 80.19082666262 | 1974 | 78.468058191018 | 1973 | 77.60751180504 | 1972 | 83.220470042412 | 1971 | 85.581733566027 | 1970 | 83.626546520775 | 1969 | 82.125909522303 | 1968 | 85.586862779845 | 1967 | 89.030146163216 | 1966 | 88.275021104962 | 1965 | 92.398364204955 | 1964 | 90.982830877383 | 1963 | 91.128254580521 | 1962 | 96.665755670948 | 1961 | 97.11634073583 | 1960 | 99.359743897559 |
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