Year Percent Change From Preceding Period 2004-01-01 2.70646997328377 2005-01-01 4.55625884166095 2006-01-01 8.36396570152554 2007-01-01 8.28026555320200 2008-01-01 6.24240246246152 2009-01-01 -7.65252888428294 2010-01-01 8.56368495730325 2011-01-01 6.04833394972735 2012-01-01 4.45615161691388 2013-01-01 11.34331977772060 2014-01-01 4.14945964554776 2015-01-01 -1.69808198461094 2016-01-01 4.31527038031382 2017-01-01 2.35995839807895 2018-01-01 4.61795884082420 2019-01-01 3.60696233530054