Year	Percent
2005-01-01	7.26015928086834
2006-01-01	5.47346164907694
2007-01-01	4.83293913336064
2008-01-01	5.04172261421452
2009-01-01	7.20629754176515
2010-01-01	5.59638345078662
2011-01-01	4.60180446524134
2012-01-01	4.06621273152500
2013-01-01	4.03689547594511
2014-01-01	4.85142028046390
2015-01-01	4.64701967602786
2016-01-01	5.04819125343087
2017-01-01	5.19834371235326