Year	Percent
1999-01-01	5.050
2000-01-01	2.975
2001-01-01	3.050
2002-01-01	3.925
2003-01-01	2.750
2004-01-01	3.775
2005-01-01	4.450
2006-01-01	4.775
2007-01-01	4.250
2008-01-01	4.325
2009-01-01	5.125
2010-01-01	4.625
2011-01-01	4.050
2012-01-01	4.500
2013-01-01	5.375
2014-01-01	5.375
2015-01-01	5.625
2016-01-01	5.650
2017-01-01	5.900