Year | Value | 2022 | 121.7460170878 | 2021 | 116.80939740347 | 2020 | 112.49209909772 | 2019 | 109.32368682759 | 2018 | 112.11512086728 | 2017 | 108.88387889208 | 2016 | 105.92190708148 | 2015 | 104.19857802804 | 2014 | 104.80233418263 | 2013 | 105.78645206901 | 2012 | 103.41086545574 | 2011 | 102.94238514013 | 2010 | 100 | 2009 | 99.202340682963 | 2008 | 98.627434864798 | 2007 | 88.609979334045 | 2006 | 88.562191830022 | 2005 | 88.526351202005 | 2004 | 82.122825662967 | 2003 | 81.907781894864 | 2002 | 83.251805445502 | 2001 | 81.119288078491 | 2000 | 77.995180003008 | 1999 | 75.796954817965 | 1998 | 77.583012780812 | 1997 | 74.208020309211 | 1996 | 72.09320049256 | 1995 | 68.47182332081 | 1994 | 61.929980687972 | 1993 | 45.523007138985 | 1992 | 46.08293086187 | 1991 | 48.242061188965 | 1990 | 52.321371071579 | 1989 | 52.730375819321 | 1988 | 54.273661036937 | 1987 | 55.040910993322 | 1986 | 59.00113118801 | 1985 | 60.956349588326 | 1984 | 61.524465968118 | 1983 | 56.775520627464 | 1982 | 58.225095926752 | 1981 | 52.153474134441 | 1980 | 42.43107010699 | 1979 | 38.466945332352 | 1978 | 35.86063822858 | 1977 | 32.572981926928 | 1976 | 26.428149260965 | 1975 | 21.394169585311 | 1974 | 19.606848121997 | 1973 | 18.962592433439 | 1972 | 16.963447508942 | 1971 | 15.456279655666 | 1970 | 14.8344753017 | 1969 | 14.67048294461 | 1968 | 13.258977299705 | 1967 | 13.658220597523 | 1966 | 13.599651898563 | 1965 | 12.299426781752 | 1964 | 11.78402223078 | 1963 | 11.666884832859 |
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