Year	Percent
2000-01-01	3.225
2001-01-01	3.450
2002-01-01	3.600
2003-01-01	3.725
2004-01-01	3.725
2005-01-01	4.200
2006-01-01	3.375
2007-01-01	2.450
2008-01-01	2.375
2009-01-01	2.600
2010-01-01	2.950
2011-01-01	2.975
2012-01-01	2.625
2013-01-01	3.225
2014-01-01	3.250
2015-01-01	4.000
2016-01-01	3.925
2017-01-01	3.700