Year	Percent
2000-01-01	3.225
2001-01-01	3.475
2002-01-01	3.675
2003-01-01	3.750
2004-01-01	3.800
2005-01-01	4.225
2006-01-01	3.375
2007-01-01	2.450
2008-01-01	2.425
2009-01-01	2.625
2010-01-01	2.975
2011-01-01	3.050
2012-01-01	2.700
2013-01-01	3.325
2014-01-01	3.325
2015-01-01	4.100
2016-01-01	4.025
2017-01-01	3.800