Year Percent Change From Preceding Period 2004-01-01 0.600856427010277 2005-01-01 2.059067927617670 2006-01-01 0.131225020452730 2007-01-01 1.049455819376160 2008-01-01 0.959527068516733 2009-01-01 1.068326531239650 2010-01-01 3.823758508424930 2011-01-01 5.758343753745410 2012-01-01 -3.828652744248820 2013-01-01 1.033342417148530 2014-01-01 -1.208884539581230 2015-01-01 3.849333688106450 2016-01-01 3.975559422359920 2017-01-01 3.638956194733690 2018-01-01 2.250489236790600 2019-01-01 2.739726027397720