Year Percent Change From Preceding Period 2004-01-01 7.045586425807520 2005-01-01 -1.003950780957730 2006-01-01 1.114980383099580 2007-01-01 3.517534856473750 2008-01-01 5.737197446096280 2009-01-01 6.470172502307260 2010-01-01 6.520902724615740 2011-01-01 -4.321958830794620 2012-01-01 5.647348281341860 2013-01-01 4.800718693593570 2014-01-01 -0.940235558906641 2015-01-01 5.868247652210180 2016-01-01 0.405596455448508 2017-01-01 4.557732010725640 2018-01-01 5.411814656279010 2019-01-01 5.395141617696210