Year	Percent
1999-01-01	5.775
2000-01-01	5.400
2001-01-01	5.075
2002-01-01	6.050
2003-01-01	5.875
2004-01-01	4.775
2005-01-01	4.550
2006-01-01	4.950
2007-01-01	3.400
2009-01-01	2.875
2010-01-01	2.875
2011-01-01	4.375
2012-01-01	3.950
2013-01-01	4.175
2014-01-01	4.475
2015-01-01	5.700
2016-01-01	5.850
2017-01-01	4.650