Year Percent Change From Preceding Period 2004-01-01 2.318995942834510 2005-01-01 3.032786479848290 2006-01-01 4.337189303550310 2007-01-01 4.288979508174160 2008-01-01 4.828769446493840 2009-01-01 2.458004880801620 2010-01-01 5.576143210668320 2011-01-01 5.948992374605300 2012-01-01 4.209976780042500 2013-01-01 1.482222019184210 2014-01-01 2.276671654276050 2015-01-01 1.799140106949140 2016-01-01 2.370085697430080 2017-01-01 -2.221824654317290 2018-01-01 0.112854193145380 2019-01-01 0.544740258723034