Year Percent Change from Year Ago 1999-01-01 -3.389304879365990 2000-01-01 6.640061122382620 2001-01-01 -5.962310758117740 2002-01-01 6.430278620557360 2003-01-01 5.608255120883880 2004-01-01 9.644322567948200 2005-01-01 9.009853299615980 2006-01-01 7.109703432242510 2007-01-01 5.030457589483070 2008-01-01 0.845251451854484 2009-01-01 -4.704465898802480 2010-01-01 8.487372125909550 2011-01-01 11.113495580652100 2012-01-01 4.789940274249200 2013-01-01 8.491309301497620 2014-01-01 5.166690719537690 2015-01-01 6.085886619366500 2016-01-01 3.183831550653830 2017-01-01 7.441193285930340