Year 2000 = 100 1980 144 1981 168 1982 127 1983 121 1984 147 1985 184 1986 217 1987 309 1988 167 1989 180 1990 131 1991 96 1992 55 1993 72 1994 78 1995 108 1996 88 1997 107 1998 108 1999 91 2000 100 2001 90.148 2002 88.76062228 2003 104.1969821 2004 131.129818 2005 180.3756212 2006 214.2880417 2007 236.4989973 2008 320.0706479 2009 223.7197808 2010 282.9898623 2011 393.5879603 2012 373.4520002 2013 347.2879531 2014 350.691375 2015 246.7850275 2016 230.9957215 2017 263.6261771 2018 272.407565