Year 2015 = 100 1980 4.0406385299 1981 4.4635416783 1982 4.243611882 1983 4.3231199772 1984 5.1424115783 1985 5.346680961 1986 6.3661378419 1987 8.7239120014 1988 11.5015472339 1989 12.9881884278 1990 14.8485914782 1991 18.0436757143 1992 22.2138456595 1993 24.9576579955 1994 29.1321480544 1995 35.0899186571 1996 36.0226813997 1997 38.1725813987 1998 33.4232226864 1999 32.3408456631 2000 38.3059099179 2001 36.1522516647 2002 37.2190559183 2003 41.7432771841 2004 48.8381035698 2005 53.7179708888 2006 60.0879951794 2007 66.240555134 2008 70.3262928664 2009 63.0385730109 2010 78.9893980626 2011 91.4248398868 2012 99.0544043639 2013 111.3654642938 2014 107.5155809135 2015 100 2016 97.8076306179 2017 105.3944876827 2018 112.142003615 2019 103.4117848941 2020 101.9683203751 2021 127.4867350158