Year 2000 = 100 1985 37.7551 1986 43.91892 1987 39.69072 1988 40.74074 1989 48.32215 1990 37.66234 1991 34.04255 1992 37.75934 1993 31.60377 1994 36.97479 1995 36.76471 1996 37.3494 1997 36.8984 1998 37.14286 1999 79 2000 100 2001 89.93609 2002 91.51997 2003 101.00671 2004 119.02067 2005 153.42543 2006 174.98763 2007 177.06227 2008 225.38447 2009 199.15136 2010 207.25959 2011 228.59063 2012 237.58977 2013 236.57852 2014 221.09655 2015 141.13347 2016 116.62799