Year 2015 = 100 1980 4.0412928536 1981 4.0410722221 1982 4.143697317 1983 4.1310741895 1984 5.4548399473 1985 4.7957177414 1986 4.80183496 1987 6.1364358541 1988 5.6577616315 1989 5.7588203558 1990 6.0924932739 1991 5.9595616008 1992 7.2185304203 1993 8.3860293274 1994 10.1866809019 1995 12.6442642063 1996 13.2912830612 1997 14.6546470313 1998 17.2068647827 1999 17.8283898211 2000 18.7705949032 2001 19.0441809414 2002 19.8687863713 2003 24.4798091754 2004 28.6490438042 2005 36.7589843911 2006 40.9483154006 2007 46.5880817003 2008 58.7969102824 2009 60.9399427768 2010 74.7586069914 2011 82.0027225227 2012 86.7176737561 2013 86.4795994122 2014 89.4759503025 2015 100 2016 99.5397946987 2017 109.5761609713 2018 113.3078947036 2019 113.4494492783 2020 96.2088865231 2021 113.3848038187