Year 2000 = 100 1980 422 1981 371 1982 395 1983 305 1984 221 1985 184 1986 197 1987 182 1988 178 1989 162 1990 261 1991 225 1992 239 1993 250 1994 397 1995 336 1996 465 1997 315 1998 421 1999 107 2000 100 2001 98.47073728 2002 97.33350357 2003 103.5854423 2004 112.0792585 2005 120.837259 2006 128.4889337 2007 142.0115535 2008 157.3020222 2009 146.4664974 2010 154.408199 2011 174.5804071 2012 173.1548151 2013 171.2454257 2014 168.9105266 2015 153.5637044 2016 149.5257504 2017 152.8111216 2018 162.1682598