Year	Percent
2000-01-01	8.4246300000000000
2001-01-01	8.7777800000000000
2002-01-01	6.8210600000000010
2003-01-01	7.0229700000000000
2004-01-01	7.1150100000000010
2005-01-01	6.1787700000000000
2006-01-01	4.9936900000000000
2007-01-01	4.1497000000000000
2008-01-01	3.5459300000000002
2009-01-01	3.3057100000000000
2010-01-01	3.1175300000000000
2011-01-01	3.2265800000000000
2012-01-01	3.1352900000000004
2013-01-01	3.9070800000000000
2014-01-01	3.9550900000000000
2015-01-01	4.1342200000000000
2016-01-01	2.4548400000000004