Year 2015 = 100 1980 23.6217460328 1981 19.0897180314 1982 22.5750931295 1983 19.6196216851 1984 18.5862990976 1985 16.3536495147 1986 18.7471867518 1987 23.7646226328 1988 19.6647891584 1989 22.4124630165 1990 19.239495008 1991 24.6580020418 1992 12.7170283317 1993 13.9073006059 1994 13.3375078417 1995 15.2683321397 1996 13.0898262886 1997 30.9385720872 1998 48.2725118775 1999 51.1212762141 2000 48.4337899709 2001 42.4493397777 2002 43.3789670351 2003 52.6364457224 2004 56.6018714629 2005 65.3935013849 2006 69.3694227277 2007 69.0753873399 2008 61.3644490463 2009 67.0132962102 2010 67.8112226546 2011 87.9600272793 2012 84.7676818364 2013 97.2300497564 2014 102.3964826653 2015 100 2016 116.0681397381 2017 108.522327927 2018 117.1325911292 2019 129.5772646842 2020 77.3793353964 2021 101.0000737303