Year Percent Change From Preceding Period 2004-01-01 4.828975491613160 2005-01-01 5.763120165206520 2006-01-01 6.174755890034490 2007-01-01 4.438506759885430 2008-01-01 3.924008565233200 2009-01-01 3.414949216292060 2010-01-01 3.732643027218350 2011-01-01 4.139889549296630 2012-01-01 4.215502157799560 2013-01-01 4.168998262529970 2014-01-01 4.486876415028990 2015-01-01 3.692302160145980 2016-01-01 0.971737813158903 2017-01-01 0.974650361072871 2018-01-01 0.767174534628342 2019-01-01 1.270255007441840