Year Percent Change From Preceding Period 2004-01-01 4.861154351784440 2005-01-01 2.847878455136880 2006-01-01 2.120663656103370 2007-01-01 3.557803799851590 2008-01-01 1.132819713218410 2009-01-01 -1.186235522101760 2010-01-01 4.472166986630120 2011-01-01 3.538264151376410 2012-01-01 3.143028358633760 2013-01-01 3.659963777757570 2014-01-01 4.364828814823920 2015-01-01 4.114506740099040 2016-01-01 -1.191917928039590 2017-01-01 -2.628584124038220 2018-01-01 0.227993689194986 2019-01-01 2.229082489834290