Year 2010 = 100 1964 2.96946523316725 1965 3.22103444747537 1966 3.68450814993644 1967 3.5810349512398 1968 3.6232865073772 1969 3.77030467717114 1970 4.34479649905792 1971 4.25792212599278 1972 4.61512023062824 1973 5.14261797478399 1974 6.16118227436277 1975 6.62856865067454 1976 6.42220568283727 1977 7.05793037266478 1978 7.57641237826099 1979 7.84654586018423 1980 8.99877210487267 1981 10.0016723632259 1982 11.1717226646585 1983 12.5544733763075 1984 12.9117466911015 1985 13.9514833333358 1986 16.6021186133464 1987 18.3869008266986 1988 20.0385967498225 1989 21.8113887430962 1990 23.6085818230517 1991 27.2814758270693 1992 31.9601189691023 1993 34.3588518816048 1994 37.2275709419353 1995 40.065417323029 1996 43.7596357549729 1997 45.5143921624383 1998 50.6322433252537 1999 54.4049087921727 2000 55.7535086649626 2001 57.2523323210508 2002 58.9867341827655 2003 62.3531125994007 2004 64.1250704069399 2005 68.5088735377306 2006 73.2499176441865 2007 74.9121188718688 2008 82.3342842988434 2009 91.4691280183192 2010 100 2011 109.22707546126 2012 119.559749053898 2013 130.368145393248 2014 141.272338749022 2015 152.388930465066 2016 165.784440634692 2017 171.797601626909 2018 178.774582924802 2019 188.729977162221 2020 198.265307403646 2021 206.492683278536 2022 222.291008492302 2023 238.106479175293