Year Percent Change From Preceding Period 2004-01-01 4.926699396680090 2005-01-01 5.810204992676580 2006-01-01 9.118255577151630 2007-01-01 9.218250538792210 2008-01-01 6.650520500016200 2009-01-01 -1.270425971881000 2010-01-01 1.466790056937910 2011-01-01 3.968886400672700 2012-01-01 1.081918292077900 2013-01-01 0.802797545032586 2014-01-01 0.611212683382022 2015-01-01 1.006863732939520 2016-01-01 3.817470427822000 2017-01-01 3.891335232589750 2018-01-01 4.344181182895700 2019-01-01 4.047627493776200