Year 2015 = 100 1980 26.4645687941 1981 26.6937000293 1982 27.271313534 1983 24.2216908184 1984 27.8358138842 1985 27.731371487 1986 31.6385299526 1987 27.8212386821 1988 29.4564139597 1989 28.0958754965 1990 32.4355991389 1991 34.0892583506 1992 42.0887818987 1993 54.8653117285 1994 52.6712547721 1995 51.8631111754 1996 58.1674472643 1997 49.7265464299 1998 48.6296693645 1999 50.6016314631 2000 51.220478462 2001 62.3690655199 2002 69.8325577103 2003 73.650217425 2004 73.9794470383 2005 83.4208627199 2006 79.5537950146 2007 88.4014814517 2008 93.6443020641 2009 83.8855865308 2010 91.0191104573 2011 88.3553816894 2012 95.6118417815 2013 97.3127814182 2014 102.4748403973 2015 100 2016 101.0224050046 2017 93.3963766626 2018 98.4216492027 2019 96.9698222069 2020 99.7887494855 2021 100.2677642196