Year 2010 = 100 1966 20.8896483696856 1967 21.1104903995942 1968 21.4919448147539 1969 21.8181887225494 1970 22.4957722231509 1971 23.7053842504301 1972 25.7230773413588 1973 28.428392207124 1974 37.0161356863897 1975 42.2159616620959 1976 45.5085155618529 1977 48.7809929133907 1978 51.4110207235725 1979 58.6285397902074 1980 67.617814232852 1981 74.3936492398705 1982 80.5471112536016 1983 77.4592529918404 1984 78.2804918912449 1985 77.9766334984652 1986 65.5184393944977 1987 66.471076517807 1988 61.9460501820878 1989 63.4571297569922 1990 65.963625248357 1991 66.2692954302308 1992 67.4919761577258 1993 67.3238575576952 1994 68.6993733761272 1995 70.7473635946813 1996 72.2451474858628 1997 70.6250955219318 1998 67.8587803759743 1999 69.6775179581232 2000 75.7756380865047 2001 73.3455601406083 2002 71.1447348311172 2003 72.3368485404249 2004 75.515818431912 2005 79.7799174690509 2006 84.6095063426563 2007 89.1181415252942 2008 103.178969891487 2009 96.2708237811402 2010 100 2011 111.860003056702 2012 117.132813694024 2013 117.300932294055 2014 115.390493657344 2015 108.803301237964 2016 107.91685771053