Year 2015 = 100 1980 5.4984629547 1981 7.6589678038 1982 7.9210371676 1983 5.605024189 1984 4.8660910973 1985 4.0367437442 1986 6.3989537894 1987 7.8365625308 1988 7.3651324563 1989 6.0478560775 1990 7.6331854411 1991 9.2276882196 1992 10.6941151304 1993 10.8833911154 1994 14.7413962068 1995 19.9978564238 1996 20.9553754621 1997 22.5667856974 1998 21.6754608478 1999 17.9907073961 2000 19.5521828151 2001 19.2910873455 2002 19.7578071975 2003 22.1863325396 2004 26.6346843179 2005 32.9652671546 2006 40.3740598834 2007 53.7077952474 2008 78.9806094791 2009 57.5186446052 2010 79.1854071952 2011 99.5328661501 2012 112.1841595354 2013 115.1505992911 2014 111.6594292955 2015 100 2016 95.5960109709 2017 105.1692356947 2018 114.0750094698 2019 111.4947976873 2020 95.2955984079 2021 134.1378256943