| Year | Value | | 2022 | 103.87697738465 | | 2021 | 101.88232529401 | | 2020 | 102.12672877068 | | 2019 | 100.95740338484 | | 2018 | 101.0106181764 | | 2017 | 101.06440679737 | | 2016 | 100.60515753567 | | 2015 | 100.56644917832 | | 2014 | 101.14538100676 | | 2013 | 101.03457934082 | | 2012 | 101.29600479509 | | 2011 | 101.94795005172 | | 2010 | 101.2912415194 | | 2009 | 100.79140807117 | | 2008 | 101.15841355565 | | 2007 | 100.71424156262 | | 2006 | 100.23331426923 | | 2005 | 99.91454806459 | | 2004 | 98.987335235112 | | 2003 | 98.573895573956 | | 2002 | 98.009861263398 | | 2001 | 98.427512677155 | | 2000 | 98.671229587748 | | 1999 | 97.607921204797 | | 1998 | 97.253782835366 | | 1997 | 96.987106051546 | | 1996 | 98.218030354573 | | 1995 | 98.400194373511 | | 1994 | 98.505424763978 | | 1993 | 98.319964907334 | | 1992 | 99.33049391547 | | 1991 | 100.31400424107 | | 1990 | 100.78449351049 | | 1989 | 100.68547347814 | | 1988 | 100.65876580038 | | 1987 | 101.09803582548 | | 1986 | 100.12104159608 | | 1985 | 100.36796099719 | | 1984 | 99.870868279988 | | 1983 | 100.26732788942 | | 1982 | 102.45499488898 | | 1981 | 101.47121974176 | | 1980 | 101.537508024 | | 1979 | 99.601968810427 | | 1978 | 98.953002730798 | | 1969 | 100.39869711479 | | 1968 | 99.833133708015 | | 1967 | 99.628119939695 | | 1966 | 99.395117475189 | | 1965 | 98.814477506477 | | 1964 | 99.817680729277 | | 1963 | 99.304009781484 | | 1962 | 98.787474080062 | | 1961 | 97.853274249138 | | 1960 | 97.565870948456 |
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