Year	Percent
2008-01-01	7.100000000000000
2009-01-01	18.900000000000000
2010-01-01	20.930600000000000
2011-01-01	20.665500000000000
2012-01-01	19.389900000000000
2013-01-01	19.470800000000000
2014-01-01	12.392100000000000
2015-01-01	7.952539999999999
2016-01-01	6.718350000000000