Year 2015 = 100 1980 8.0665365964 1981 9.6471526783 1982 8.4058057204 1983 8.7371902812 1984 8.3050067679 1985 7.824234782 1986 9.9884249695 1987 12.8821177307 1988 16.9229270259 1989 22.4802044367 1990 22.6808706344 1991 22.6029567144 1992 21.988613013 1993 20.5642673347 1994 19.104633288 1995 26.4041452369 1996 23.8050411598 1997 31.1978149686 1998 32.0766636286 1999 30.5961193274 2000 28.7515180999 2001 24.9935109276 2002 25.4908942296 2003 33.8220645283 2004 44.6467554919 2005 43.6730171616 2006 42.6340663343 2007 56.1875126168 2008 71.9975731476 2009 65.3234076633 2010 78.1555791021 2011 100.4715790072 2012 110.8790068078 2013 115.3932970692 2014 111.6038002911 2015 100 2016 84.87971829 2017 73.6251218333 2018 87.1253343063 2019 90.6840841945 2020 88.885877768 2021 115.48346367