Year Percent Change From Preceding Period 2004-01-01 2.63190259522591 2005-01-01 2.46775403696733 2006-01-01 4.77116431336975 2007-01-01 4.60756198912082 2008-01-01 2.05412655340011 2009-01-01 1.70922097496230 2010-01-01 3.04665684207369 2011-01-01 3.30073971054102 2012-01-01 4.11275621110399 2013-01-01 -36.70000000000000 2014-01-01 1.04003596433148 2015-01-01 4.80000000000001 2016-01-01 4.53122710038230 2017-01-01 4.32876971832278 2018-01-01 4.34073026865314 2019-01-01 5.04439883543739