Year	Percent
2008-01-01	30.604600000000000
2009-01-01	24.320999999999998
2010-01-01	24.090300000000000
2011-01-01	21.079400000000000
2012-01-01	27.378100000000000
2013-01-01	35.847900000000000
2014-01-01	36.754800000000000
2015-01-01	36.761700000000000
2016-01-01	40.177800000000000