Year Percent Change From Preceding Period 2004-01-01 0.408246929607890 2005-01-01 1.170901191010070 2006-01-01 -1.406187223784400 2007-01-01 -1.020749171823890 2008-01-01 5.263438084891420 2009-01-01 1.884961982674070 2010-01-01 1.447073294261690 2011-01-01 1.262392126096910 2012-01-01 2.683476545992120 2013-01-01 0.480142670965213 2014-01-01 4.512253396136480 2015-01-01 -0.143236995427660 2016-01-01 2.086340992164740 2017-01-01 2.652447384380340 2018-01-01 2.799999999999510 2019-01-01 2.500000000000090