Year	Percent
2005-01-01	1.44893548896259
2006-01-01	1.47932546779420
2007-01-01	1.52411977106765
2008-01-01	1.63998048364717
2009-01-01	2.28848690009894
2010-01-01	2.27146533714303
2011-01-01	2.23262720022000
2012-01-01	2.15451043494300
2013-01-01	2.16206874633367
2014-01-01	2.09563895169305
2015-01-01	1.89552524435524
2016-01-01	1.70551488403483
2017-01-01	1.50866702376497