Year Percent Change From Preceding Period 2004-01-01 3.455970390425230 2005-01-01 4.688550634631070 2006-01-01 8.373577935550480 2007-01-01 8.817922331352520 2008-01-01 6.444107662264880 2009-01-01 -1.486498675554130 2010-01-01 1.074116881867650 2011-01-01 3.342601003462200 2012-01-01 -1.973831052631290 2013-01-01 -0.427080991533519 2014-01-01 -0.616328357449696 2015-01-01 -0.225504581992576 2016-01-01 2.550810357770660 2017-01-01 2.623773950070000 2018-01-01 3.071094800594860 2019-01-01 2.778159314799740