Year 2015 = 100 1980 11.7321670494 1981 15.4560916218 1982 15.8240054264 1983 14.8274195805 1984 13.5978656176 1985 13.3476568793 1986 11.8776133939 1987 13.2245305417 1988 13.3418937266 1989 10.3809031158 1990 12.6995952501 1991 12.2483599345 1992 15.8955564313 1993 17.2826202869 1994 16.5176838742 1995 18.0586922824 1996 20.96620279 1997 20.0327674239 1998 18.6984510672 1999 18.1528563363 2000 22.4527542902 2001 23.7900987354 2002 24.791324416 2003 28.0489708707 2004 39.948738202 2005 51.2710181333 2006 56.402079903 2007 66.8196864981 2008 83.0047680795 2009 69.5299555496 2010 76.01284781 2011 92.4540575693 2012 101.3521698865 2013 105.2459853618 2014 111.9899873029 2015 100 2016 94.3812529338 2017 100.1137606966 2018 99.1940969137 2019 93.6285417246 2020 84.1663936771 2021 105.5577710212