Year	Percent
2007-01-01	51.445000000000000
2008-01-01	53.401300000000000
2009-01-01	59.470000000000000
2010-01-01	60.514300000000000
2011-01-01	59.442700000000000
2012-01-01	51.007900000000000
2013-01-01	42.391999999999996
2014-01-01	42.391999999999996
2015-01-01	41.905700000000000