Year 2010 = 100 1968 7.52480083848968 1969 7.44190829559295 1970 7.87786166933996 1971 8.1940813700201 1972 8.85722171316321 1973 9.77702192991105 1974 11.4618896166232 1975 13.0153572724161 1976 14.3078669227565 1977 16.4108814370007 1978 18.4561781806352 1979 19.670707438769 1980 21.5496050777554 1981 23.8613389624717 1982 27.0246414078439 1983 31.5191707068943 1984 35.1039475115789 1985 38.0907227753558 1986 41.0503814527433 1987 46.4446067637902 1988 47.2259595279011 1989 46.439398942563 1990 46.9499450028635 1991 46.9781390695069 1992 46.9705967077296 1993 45.4644588928368 1994 61.4199660724494 1995 66.9905670350674 1996 69.6193195769357 1997 72.9514664757748 1998 75.2645764514801 1999 76.6733374030397 2000 77.6142650318084 2001 81.0446389417932 2002 83.3417865050857 2003 83.8611421466501 2004 84.0570815081705 2005 85.749604048364 2006 90.1379070575965 2007 90.9684397574072 2008 95.8241588442075 2009 98.7406806505194 2010 100 2011 102.939699463051 2012 105.755405742962 2013 107.923758722329 2014 109.925634907972 2015 112.867503568736 2016 113.854180430792 2017 114.583313019794 2018 115.808046057299 2019 118.648588290011 2020 121.540776745136 2021 124.302010149149 2022 132.067998413642 2023 141.818332882446