Year Percent Change From Preceding Period 2004-01-01 10.953052399555100 2005-01-01 15.028911472910000 2006-01-01 11.547683182967000 2007-01-01 14.010126938292700 2008-01-01 11.166016887710300 2009-01-01 0.858567052600081 2010-01-01 4.859219583967450 2011-01-01 3.471981378006340 2012-01-01 8.542147334298490 2013-01-01 4.954590475832930 2014-01-01 4.822625551408190 2015-01-01 0.943575613060769 2016-01-01 -2.580097242957590 2017-01-01 -2.500000000000000 2018-01-01 -0.118177229075392 2019-01-01 3.055059752742120