Year 2015 = 100 1980 34.7114484848 1981 36.5505035898 1982 41.1519068447 1983 29.5911092313 1984 25.1997691704 1985 34.1131390263 1986 26.6858698234 1987 33.2952939253 1988 30.562416348 1989 39.7601307365 1990 32.6519268543 1991 28.5221260764 1992 20.8254223456 1993 24.8550407086 1994 27.5714736122 1995 18.4216246975 1996 24.0942064643 1997 22.0411820928 1998 35.5579773735 1999 47.4313146955 2000 35.0425062763 2001 41.906440583 2002 41.3666604641 2003 38.3310484112 2004 46.1595542304 2005 44.2966335177 2006 56.4677288377 2007 64.2230313869 2008 68.164079251 2009 71.333240573 2010 87.1237171682 2011 92.424350078 2012 105.4438221972 2013 126.7566960656 2014 121.8291256075 2015 100 2016 104.5093733283 2017 109.0735772107 2018 120.2130968027 2019 99.15920293 2020 106.6623895746 2021 107.2406847019