Year | Value | 2022 | 92.18266604551 | 2021 | 86.425812505422 | 2020 | 89.471252461533 | 2019 | 86.898468107159 | 2018 | 86.003966972416 | 2017 | 86.823372138072 | 2016 | 87.743944537924 | 2015 | 87.930148003966 | 2014 | 87.494932187398 | 2013 | 86.72940322497 | 2012 | 86.268987298506 | 2011 | 88.282359762284 | 2010 | 85.078037557518 | 2009 | 87.057023195876 | 2008 | 88.937330506872 | 2007 | 87.111779250186 | 2006 | 88.03293586992 | 2005 | 86.550496098544 | 2004 | 90.46723974557 | 2003 | 92.17940486669 | 2002 | 92.478754112026 | 2001 | 91.426154584249 | 2000 | 90.312329627618 | 1999 | 90.936908250389 | 1998 | 90.796342409519 | 1997 | 87.952695846911 | 1996 | 86.100182070707 | 1995 | 94.903183990015 | 1994 | 95.224577355801 | 1993 | 97.323528314672 | 1992 | 95.852287183573 | 1991 | 92.70560856681 | 1990 | 84.902874995178 | 1989 | 88.135143480973 | 1988 | 87.403458366058 | 1987 | 88.93817515433 | 1986 | 87.675964638946 | 1985 | 82.699037804608 | 1984 | 86.970356011077 | 1983 | 86.73739814555 | 1982 | 86.604186387145 | 1981 | 86.137388479462 | 1980 | 85.829673405222 | 1979 | 86.455800017285 | 1978 | 86.352889671935 | 1977 | 86.275987869744 | 1976 | 86.210348011987 | 1975 | 86.224939984679 | 1974 | 86.303993901347 | 1973 | 86.273631622498 | 1972 | 86.257779577615 | 1971 | 86.254138020759 | 1970 | 86.262896791312 |
|