Year Percent Change From Preceding Period 2004-01-01 5.82202874518619 2005-01-01 7.86577060544151 2006-01-01 7.19722573575490 2007-01-01 5.28165478461693 2008-01-01 7.64852044273775 2009-01-01 4.06940708855289 2010-01-01 4.09940306254867 2011-01-01 5.72112762880242 2012-01-01 5.70467433441195 2013-01-01 2.35213602184586 2014-01-01 5.03757233137535 2015-01-01 6.25036798248733 2016-01-01 3.42308029057534 2017-01-01 3.53913072177052 2018-01-01 4.61005851948079 2019-01-01 5.20025110266632