Year 2015 = 100 1980 12.6556496066 1981 14.5360646523 1982 13.7551543307 1983 13.7078431922 1984 14.6963879353 1985 18.6050554082 1986 20.2677162818 1987 21.3092666775 1988 28.9370692078 1989 38.4396405318 1990 32.2585625878 1991 31.2709903876 1992 27.8859637139 1993 26.7483161227 1994 25.2819130516 1995 32.936796023 1996 32.3459552954 1997 43.161900656 1998 48.3322356185 1999 45.6494177452 2000 43.755217662 2001 38.5439706609 2002 39.6912013668 2003 49.8837572197 2004 60.612604061 2005 54.3747934606 2006 49.3242694464 2007 60.2251310436 2008 69.66625881 2009 68.7818903395 2010 77.9698861208 2011 87.1780006386 2012 96.1992254205 2013 101.8444364866 2014 99.0205626429 2015 100 2016 87.9948201541 2017 74.5879755581 2018 84.110736734 2019 88.6297519863 2020 90.0293750741 2021 101.8174610886