Year 2015 = 100 1980 3.0313746506 1981 3.2760920523 1982 3.2360552656 1983 2.9674937959 1984 3.454211947 1985 3.3180253646 1986 4.1359463423 1987 5.4645180752 1988 7.4335991717 1989 9.356035921 1990 10.7493086294 1991 13.2469014004 1992 15.1314075824 1993 17.2268617767 1994 21.090700559 1995 26.3354523668 1996 26.0000964003 1997 26.7579252952 1998 25.4197677275 1999 27.2842666499 2000 32.1789146211 2001 30.315022297 2002 31.7801923801 2003 37.4801706368 2004 44.910822693 2005 51.7645617072 2006 60.5300537396 2007 71.7968057262 2008 82.9536513056 2009 71.1224541907 2010 90.199206673 2011 103.8571115711 2012 106.9040587276 2013 106.6237399645 2014 106.1370982065 2015 100 2016 100.502982597 2017 110.4172053109 2018 118.0334347122 2019 114.9126364318 2020 108.0838752703 2021 126.9220289845