Year Percent Change From Preceding Period 2004-01-01 5.57784371388679 2005-01-01 5.86819483395327 2006-01-01 6.24987854697267 2007-01-01 4.34681897226772 2008-01-01 9.14979908145120 2009-01-01 4.84448699094987 2010-01-01 7.61040462481976 2011-01-01 8.64516705076749 2012-01-01 8.64598827540480 2013-01-01 6.68352767232029 2014-01-01 3.95412676153379 2015-01-01 4.02571587823173 2016-01-01 5.03252579881248 2017-01-01 4.04900000000008 2018-01-01 4.99999999999978 2019-01-01 6.00000000000022