Year Percent Change From Preceding Period 2004-01-01 1.009239531151740 2005-01-01 45.109779313569800 2006-01-01 27.864709235582000 2007-01-01 38.097823868436900 2008-01-01 36.785971958972100 2009-01-01 8.186848919055440 2010-01-01 25.146910759424700 2011-01-01 10.411988345450800 2012-01-01 20.333487184124200 2013-01-01 13.881542723369600 2014-01-01 16.786765696195200 2015-01-01 13.143621611156900 2016-01-01 -4.845295652562750 2017-01-01 -0.375178650901461 2018-01-01 12.600361371326600 2019-01-01 11.350937439329000