Year | Value | 2022 | 102.21728177187 | 2021 | 99.399284245193 | 2020 | 98.824310405343 | 2019 | 99.546896373006 | 2018 | 99.186960600683 | 2017 | 98.266853204659 | 2016 | 97.745101737559 | 2015 | 98.171774593001 | 2014 | 99.30776472595 | 2013 | 99.320877603304 | 2012 | 99.537194975939 | 2011 | 100.23134920765 | 2010 | 100 | 2009 | 99.316465640817 | 2008 | 99.795967236668 | 2007 | 97.432221431313 | 2006 | 96.723863632636 | 2005 | 95.709809317934 | 2004 | 94.601127428629 | 2003 | 93.84761672019 | 2002 | 93.252411818155 | 2001 | 92.656895290517 | 2000 | 91.749474336812 | 1999 | 90.341476055673 | 1998 | 89.618750676556 | 1997 | 89.602677355972 | 1996 | 89.138953856449 | 1995 | 88.42129649372 | 1994 | 86.858002053449 | 1993 | 86.124123758008 | 1992 | 83.378776000236 | 1991 | 80.143364178801 | 1990 | 75.707226105697 | 1989 | 71.82578980689 | 1988 | 69.628812903268 | 1987 | 68.348999353787 | 1986 | 67.378531620158 | 1985 | 66.876748793681 | 1984 | 64.655571701771 | 1983 | 62.814200614723 | 1982 | 61.014401203203 | 1981 | 57.74865590957 | 1980 | 54.229024316638 | 1979 | 52.132013626239 | 1978 | 50.297347410063 | 1977 | 49.785161208845 | 1976 | 49.148200936189 | 1975 | 48.319294873267 | 1974 | 45.286632409719 | 1973 | 41.256900046908 | 1972 | 37.935750181235 | 1971 | 35.566986383601 | 1970 | 33.373286469216 | 1969 | 32.208626780776 | 1968 | 31.426412074016 | 1967 | 30.691107681407 | 1966 | 29.509206076371 | 1965 | 28.164094662017 | 1964 | 27.234189100977 | 1963 | 26.420296831588 | 1962 | 25.541611038763 | 1961 | 24.484846795013 | 1960 | 24.041191164266 |
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