Year	Percent
2004-01-01	1.7586400000000002
2005-01-01	1.7843900000000001
2006-01-01	1.5777200000000000
2007-01-01	1.6349200000000002
2008-01-01	1.6349200000000002
2009-01-01	1.0948000000000000
2010-01-01	1.2324100000000000
2011-01-01	1.1489200000000002
2012-01-01	1.1702500000000000
2013-01-01	1.2447500000000000
2014-01-01	1.1981600000000001
2015-01-01	1.1973100000000000