Year	Percent
2005-01-01	7.6925000000000000
2006-01-01	7.5561300000000005
2007-01-01	7.6231899999999990
2008-01-01	5.4960400000000000
2009-01-01	6.0393200000000000
2010-01-01	3.4789999999999996
2011-01-01	4.5265400000000000
2012-01-01	4.2095400000000005
2013-01-01	3.8448000000000000
2014-01-01	3.6237300000000000
2015-01-01	3.3617800000000004
2016-01-01	3.1500600000000000