Year	Percent
2009-01-01	4.1788200000000000
2010-01-01	3.1986000000000000
2011-01-01	3.2935800000000004
2012-01-01	3.2553000000000000
2013-01-01	3.0767000000000000
2014-01-01	2.5869500000000000
2015-01-01	2.4283000000000000
2016-01-01	2.4441000000000000