Year Percent Change From Preceding Period 2004-01-01 1.333884282892780 2005-01-01 -1.239771672932370 2006-01-01 0.970703046500398 2007-01-01 3.000956138573070 2008-01-01 1.980256348274170 2009-01-01 -0.508783422725738 2010-01-01 -0.715295404825989 2011-01-01 0.113253582045687 2012-01-01 1.922473626970460 2013-01-01 4.310268442059930 2014-01-01 3.513744753481680 2015-01-01 -0.603459872239144 2016-01-01 1.243423714952750 2017-01-01 2.862506691533000 2018-01-01 3.267100577509450 2019-01-01 3.630310350518180