Year | Value | 2014 | 82.042518677448 | 2013 | 82.542258860583 | 2012 | 81.954199829359 | 2011 | 82.493096041193 | 2010 | 82.652617784795 | 2009 | 82.316837945188 | 2008 | 85.976786558756 | 2007 | 90.326540034958 | 2006 | 90.115895647292 | 2005 | 88.915213423969 | 2004 | 89.033144041676 | 2003 | 89.341164225388 | 2002 | 88.973800595665 | 2001 | 86.919410960444 | 2000 | 84.55707037384 | 1999 | 86.649708526181 | 1998 | 86.693222661179 | 1997 | 84.877809249312 | 1996 | 85.255230864463 | 1995 | 84.903268116734 | 1994 | 83.865219585061 | 1993 | 83.98328926795 | 1992 | 83.535346222595 | 1991 | 82.638796712935 | 1990 | 82.596602843545 | 1989 | 86.542021385024 | 1988 | 85.818090239696 | 1987 | 85.768386208614 | 1986 | 85.424247474079 | 1985 | 85.372205630781 | 1984 | 86.418296490029 | 1983 | 88.252865626916 | 1982 | 89.20324713058 | 1981 | 90.341119523182 | 1980 | 90.1740786402 | 1979 | 91.310398483429 | 1978 | 89.750482023364 | 1977 | 90.152848529292 | 1976 | 89.537421159044 | 1975 | 90.543470762507 | 1974 | 90.23797045942 | 1973 | 91.395932350765 | 1972 | 89.072877511076 | 1971 | 86.22060090448 |
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