Year Percent Change From Preceding Period 2004-01-01 -6.989486815054910 2005-01-01 -8.196036745339300 2006-01-01 -5.001553101698820 2007-01-01 -3.641415465432260 2008-01-01 -16.875173913571600 2009-01-01 6.430101804078050 2010-01-01 14.417767713483300 2011-01-01 15.217574475855200 2012-01-01 8.374318881591620 2013-01-01 2.381898559943560 2014-01-01 0.168911901000599 2015-01-01 -1.138536593572520 2016-01-01 -1.878591763396170 2017-01-01 1.116564562006610 2018-01-01 1.017715929077860 2019-01-01 1.569785921915570