Year Percent Change From Preceding Period 2004-01-01 20.8934039853116000 2005-01-01 19.3085566681081000 2006-01-01 15.9499567762981000 2007-01-01 46.1354974787771000 2008-01-01 42.6319063540554000 2009-01-01 18.2154022892662000 2010-01-01 -10.2312985373802000 2011-01-01 15.9187154074227000 2012-01-01 6.8010724720139400 2013-01-01 1.4932849482393200 2014-01-01 -0.4641379609542310 2015-01-01 -9.6815681762994700 2016-01-01 -4.2345710782191200 2017-01-01 3.6916510813611200 2018-01-01 -10.7218455395185000 2019-01-01 -0.0847228581909302