Year 2000 = 100 1980 284 1981 296 1982 263 1983 206 1984 184 1985 162 1986 174 1987 188 1988 201 1989 206 1990 201 1991 183 1992 153 1993 149 1994 148 1995 154 1996 167 1997 163 1998 112 1999 103 2000 100 2001 99.19962163 2002 99.68359756 2003 108.7145692 2004 122.6738107 2005 139.4128371 2006 159.553466 2007 182.0096616 2008 209.2236069 2009 187.3289594 2010 200.6846256 2011 231.2600111 2012 226.7757757 2013 222.3229685 2014 218.0505793 2015 191.2070088 2016 185.1570724 2017 191.3738931 2018 202.6876325