Year Percent Change From Preceding Period 2004-01-01 7.4831872959002800 2005-01-01 4.1416274665321000 2006-01-01 3.8667126367180100 2007-01-01 4.4458208288756500 2008-01-01 4.3302064299016000 2009-01-01 5.4533763314934500 2010-01-01 8.2811742873987300 2011-01-01 2.0801829862842400 2012-01-01 1.4883478321266700 2013-01-01 2.5736417076499300 2014-01-01 3.4644449113622400 2015-01-01 -0.0947031426343559 2016-01-01 -4.2499934705961200 2017-01-01 -1.8920808044245400 2018-01-01 -0.8031291229284020 2019-01-01 -0.4764015490212350