Year	Percent
1999-01-01	6.350
2002-01-01	3.925
2004-01-01	4.825
2005-01-01	5.475
2006-01-01	5.675
2007-01-01	5.425
2008-01-01	5.475
2009-01-01	5.250
2010-01-01	5.250
2011-01-01	4.200
2012-01-01	5.075
2013-01-01	5.325
2014-01-01	5.100
2015-01-01	4.750
2016-01-01	6.025
2017-01-01	6.600