Year 2015 = 100 1980 46.0945791845 1981 49.4303581983 1982 44.6569528794 1983 43.536011979 1984 44.635396326 1985 39.4908263036 1986 42.7842760901 1987 45.6791255707 1988 47.741108118 1989 59.4921745567 1990 43.8056648973 1991 63.2230264434 1992 56.8046599681 1993 50.6724077319 1994 59.5243134226 1995 56.8810877579 1996 68.2394329667 1997 66.5219633504 1998 48.2866849275 1999 46.5676475791 2000 45.1119921762 2001 41.9764931523 2002 44.5632798487 2003 53.5715685249 2004 65.8454794793 2005 67.757741911 2006 88.5778473519 2007 115.4333964982 2008 137.5700195975 2009 125.8118982297 2010 154.8152641951 2011 167.4272881324 2012 186.3807301628 2013 212.0206750119 2014 156.7634861626 2015 100 2016 81.0410091945 2017 119.8750267984 2018 137.9161786651 2019 154.1781699954 2020 128.9120836989 2021 118.5325237303