Year 2010 = 100 1970 6.12687109895191 1971 7.02135095444404 1972 8.49169170584487 1973 10.0405589430465 1974 12.4929320685729 1975 14.8180381308507 1976 17.0212927497258 1977 19.5675366169081 1978 21.8732286163709 1979 24.6030445620776 1980 27.9420567217123 1981 30.8974294935249 1982 30.615445130481 1983 32.4684852304838 1984 33.7978400848336 1985 34.0798244478775 1986 34.1603914087472 1987 35.0466279783137 1988 35.6911636652712 1989 36.255132391359 1990 37.6650542065786 1991 38.4133665418086 1992 39.660553767192 1993 40.2093161463607 1994 40.9077409925754 1995 40.8079660145447 1996 40.3589786134067 1997 40.6084160584834 1998 41.6560533278054 1999 44.3000902456182 2000 47.0771604674719 2001 49.8874890153359 2002 49.9747921211127 2003 51.6252365493699 2004 53.6165788192322 2005 54.1029818371317 2006 53.9117464625729 2007 56.7801749919595 2008 77.7688294329733 2009 102.463886316225 2010 100 2011 102.559267722309 2012 109.851611765871 2013 114.618005623296 2014 116.206421540945 2015 120.903420148673 2016 119.675667780057 2017 123.094557177785 2018 127.652648173983 2019 130.301139829085 2020 141.085980294148