Year Percent Change From Preceding Period 2004-01-01 4.635042440524570 2005-01-01 5.664685399886090 2006-01-01 5.854278083969950 2007-01-01 6.850753481425560 2008-01-01 0.232253785206509 2009-01-01 3.306940292536290 2010-01-01 8.402292205336960 2011-01-01 6.111597353737820 2012-01-01 4.563337472645410 2013-01-01 5.878566681657560 2014-01-01 5.357131594887680 2015-01-01 5.718489422427740 2016-01-01 5.869197698319050 2017-01-01 4.885470834373970 2018-01-01 5.966321497828430 2019-01-01 6.133962465260360