Year	Percent
2006-01-01	30.400000000000000
2007-01-01	21.300000000000000
2008-01-01	29.200000000000000
2009-01-01	29.900000000000000
2010-01-01	27.133000000000003
2011-01-01	24.419200000000000
2012-01-01	25.895900000000000
2013-01-01	22.925000000000000
2014-01-01	16.601000000000000
2015-01-01	16.134700000000000