Year Percent Change from Year Ago 1982-01-01 0.413585661907711 1983-01-01 1.169203496263330 1984-01-01 3.225852378479340 1985-01-01 2.798085727689540 1986-01-01 2.859971887470630 1987-01-01 3.191960618508980 1988-01-01 4.194377269767230 1989-01-01 3.388383510715840 1990-01-01 2.052581478418910 1991-01-01 1.533734313549440 1992-01-01 0.834275466787219 1993-01-01 -0.852805754591459 1994-01-01 2.151023648541310 1995-01-01 2.886836736174090 1996-01-01 1.134684705629080 1997-01-01 1.835338268684580 1998-01-01 1.616080912620100 1999-01-01 1.559712851791770 2000-01-01 3.710093500052570 2001-01-01 1.772189103190270 2002-01-01 0.248553803317259 2003-01-01 0.151362314387872 2004-01-01 1.581932072192560 2005-01-01 0.949678409353835 2006-01-01 2.006561375202790 2007-01-01 1.473862354788780 2008-01-01 -1.050373136650570 2009-01-01 -5.482071040156410 2010-01-01 1.686510407388140 2011-01-01 0.576635450995570 2012-01-01 -2.818988468470160 2013-01-01 -1.728300312655650 2014-01-01 0.113608462763113 2015-01-01 0.951882639769118 2016-01-01 0.858226148156271 2017-01-01 1.502301849442740