Year 2015 = 100 1980 29.534880167 1981 40.9765770833 1982 23.7929476808 1983 35.9680496506 1984 108.9590479712 1985 42.154690567 1986 16.6327531911 1987 20.0258356385 1988 51.9583133072 1989 50.7270660724 1990 28.644466425 1991 28.7084661609 1992 47.6824930808 1993 29.9064175583 1994 49.8440292698 1995 74.3530822444 1996 53.3320011962 1997 62.6735937581 1998 58.4773703711 1999 87.4812668578 2000 35.8877010714 2001 45.0294734618 2002 34.319112802 2003 28.9639324631 2004 24.67778999 2005 43.0512538748 2006 63.0032970465 2007 101.3437905989 2008 75.1098411368 2009 62.7035668072 2010 38.9049855217 2011 85.902687578 2012 58.1077030771 2013 66.6899790302 2014 101.3587771234 2015 100 2016 105.0354680787 2017 152.2629633557 2018 81.7863922381 2019 122.1101009095 2020 92.6266360327 2021 91.1679488415