Year Percent Change From Preceding Period 2004-01-01 0.883187217447933 2005-01-01 5.364307925004820 2006-01-01 3.787094468456830 2007-01-01 1.294290500242970 2008-01-01 7.938657339158880 2009-01-01 0.398142202578038 2010-01-01 2.179174324328460 2011-01-01 2.735924592125470 2012-01-01 6.742932613660680 2013-01-01 0.968549618954646 2014-01-01 -1.082842145018930 2015-01-01 0.270511432557852 2016-01-01 -0.808909192962464 2017-01-01 0.143846298083044 2018-01-01 2.300326159500390 2019-01-01 2.298776062754900