Year	Percent
2009-01-01	5.7986699999999995
2010-01-01	5.4143700000000000
2011-01-01	5.8909699999999990
2012-01-01	7.0347100000000005
2013-01-01	8.0038500000000000
2014-01-01	8.5455100000000000
2015-01-01	10.0577000000000000
2016-01-01	10.0540000000000000