Year | Value | 2022 | 87.196 | 2021 | 87.169 | 2020 | 87.153 | 2019 | 87.147 | 2018 | 87.153 | 2017 | 87.17 | 2016 | 87.198 | 2015 | 87.238 | 2014 | 87.288 | 2013 | 87.348 | 2012 | 87.42 | 2011 | 87.502 | 2010 | 87.594 | 2009 | 87.697 | 2008 | 87.799 | 2007 | 87.9 | 2006 | 88 | 2005 | 88.1 | 2004 | 88.198 | 2003 | 88.297 | 2002 | 88.394 | 2001 | 88.491 | 2000 | 88.587 | 1999 | 88.131 | 1998 | 87.467 | 1997 | 86.771 | 1996 | 86.043 | 1995 | 85.28 | 1994 | 84.485 | 1993 | 83.654 | 1992 | 82.789 | 1991 | 81.886 | 1990 | 80.948 | 1989 | 80.263 | 1988 | 79.659 | 1987 | 79.04 | 1986 | 78.408 | 1985 | 77.762 | 1984 | 77.103 | 1983 | 76.429 | 1982 | 75.743 | 1981 | 75.043 | 1980 | 74.33 | 1979 | 73.871 | 1978 | 73.497 | 1977 | 73.12 | 1976 | 72.739 | 1975 | 72.354 | 1974 | 71.967 | 1973 | 71.576 | 1972 | 71.182 | 1971 | 70.784 | 1970 | 70.384 | 1969 | 69.98 | 1968 | 69.574 | 1967 | 69.163 | 1966 | 68.75 | 1965 | 68.334 | 1964 | 67.916 | 1963 | 67.493 | 1962 | 67.068 | 1961 | 66.641 | 1960 | 66.211 |
|