| Year | Value | | 2022 | 105.0139191893 | | 2021 | 104.87748020889 | | 2020 | 104.22054794842 | | 2019 | 103.3624371357 | | 2018 | 103.48966389716 | | 2017 | 103.48145368487 | | 2016 | 103.27932882122 | | 2015 | 103.36876612262 | | 2014 | 103.22698505348 | | 2013 | 103.06323194467 | | 2012 | 103.39372900479 | | 2011 | 103.71558319754 | | 2010 | 103.5372238268 | | 2009 | 102.89510420012 | | 2008 | 105.01611520885 | | 2007 | 105.0844449229 | | 2006 | 105.69247658431 | | 2005 | 105.67442675005 | | 2004 | 105.19058503637 | | 2003 | 104.55606511282 | | 2002 | 104.02356574418 | | 2001 | 103.56028847333 | | 2000 | 103.71748059898 | | 1999 | 102.69486874416 | | 1998 | 101.79535542227 | | 1997 | 101.18878339405 | | 1996 | 101.19378847489 | | 1995 | 101.1749207991 | | 1994 | 101.26917805324 | | 1993 | 100.95025791861 | | 1992 | 100.53278002775 | | 1991 | 100.46465411816 | | 1990 | 101.30558644903 | | 1989 | 101.53751254081 | | 1988 | 102.08907276282 | | 1987 | 102.98174231213 | | 1986 | 102.87946779992 | | 1985 | 102.62776104701 | | 1984 | 102.54425077391 | | 1983 | 101.42106384138 | | 1982 | 100.59734630385 | | 1981 | 100.39039101776 | | 1980 | 100.45693374916 | | 1979 | 100.85809450115 | | 1978 | 101.07871282476 | | 1977 | 101.10931461131 | | 1976 | 100.08706040102 | | 1975 | 99.051815415003 | | 1974 | 100.05274251364 | | 1973 | 99.711655029971 | | 1972 | 100.26362079884 | | 1971 | 99.946774262781 | | 1970 | 99.632163517665 |
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