Year 2015 = 100 1980 17.8666580436 1981 17.2813786305 1982 15.2626167128 1983 17.5903954893 1984 21.4345058983 1985 19.4876255987 1986 28.0117481231 1987 16.7684254766 1988 16.0642820303 1989 14.1076050772 1990 16.1548380432 1991 13.7746375664 1992 9.7542467484 1993 9.6864557125 1994 4.2447503914 1995 7.6075303478 1996 8.8630725442 1997 12.7389742525 1998 8.8049821123 1999 8.869553104 2000 7.7709958337 2001 12.6092311282 2002 9.5302328265 2003 9.2369948971 2004 14.3919711405 2005 18.2716556142 2006 21.5969737818 2007 25.917834723 2008 39.2454987834 2009 34.4554571457 2010 43.5868863904 2011 68.060524286 2012 86.6224854832 2013 103.0731334767 2014 106.020174775 2015 100 2016 107.23434143 2017 152.0544286205 2018 164.4785353559 2019 181.9040800324 2020 206.3688244663 2021 224.3452929599