Year	Percent
1996-01-01	4.3756100000000000
1997-01-01	3.9529500000000000
1998-01-01	4.6231599999999995
1999-01-01	5.4000800000000000
2000-01-01	5.2029200000000000
2001-01-01	4.1331500000000000
2002-01-01	4.9694000000000000
2003-01-01	4.2435100000000000
2004-01-01	4.5571900000000000
2005-01-01	3.7894900000000002
2006-01-01	5.4826200000000000
2007-01-01	5.6332600000000000
2008-01-01	5.8934100000000000
2009-01-01	3.0842300000000000
2010-01-01	3.0116600000000000
2011-01-01	3.3274199999999996
2012-01-01	3.8326900000000000
2013-01-01	4.7721900000000000
2014-01-01	4.0707100000000000
2015-01-01	3.6422700000000000
2016-01-01	4.9697100000000000