Year	Percent
2000-01-01	6.0426600000000000
2001-01-01	5.8024400000000000
2002-01-01	3.6910500000000000
2003-01-01	3.7410800000000000
2004-01-01	3.6191300000000000
2005-01-01	3.7489000000000000
2006-01-01	3.3351599999999997
2007-01-01	2.7358300000000000
2008-01-01	1.9892700000000000
2009-01-01	1.5355900000000000
2010-01-01	1.9866400000000002
2011-01-01	1.7661000000000000
2012-01-01	1.9392000000000000
2013-01-01	2.1245600000000000
2014-01-01	2.1203900000000000
2015-01-01	2.9280800000000000
2016-01-01	2.1783700000000000