Year Percent Change From Preceding Period 2004-01-01 2.187044445582260 2005-01-01 1.737366720966700 2006-01-01 2.399183951347360 2007-01-01 3.426436868546890 2008-01-01 4.216521317237550 2009-01-01 -7.370813919773340 2010-01-01 -2.513876447968870 2011-01-01 -1.350292716725750 2012-01-01 0.185978946098632 2013-01-01 -0.558650381626883 2014-01-01 0.479340961918011 2015-01-01 0.292805182569973 2016-01-01 1.334190624384990 2017-01-01 1.336021642209840 2018-01-01 2.139133267424130 2019-01-01 2.571660827883600