Year	Percent
2005-01-01	10.01132996018290
2006-01-01	9.66888054631101
2007-01-01	8.83996659974497
2008-01-01	9.72591667655036
2009-01-01	10.94301051968400
2010-01-01	9.92383308266995
2011-01-01	8.94127194463140
2012-01-01	8.13259296892816
2013-01-01	7.12682674660205
2014-01-01	7.12110123831123
2015-01-01	7.04200360251228
2016-01-01	7.29284306060772
2017-01-01	7.50859368343093