Year	Percent
2000-01-01	3.325
2001-01-01	3.475
2002-01-01	3.750
2003-01-01	4.050
2004-01-01	4.200
2005-01-01	4.375
2006-01-01	3.400
2007-01-01	2.500
2008-01-01	2.550
2009-01-01	3.100
2010-01-01	3.500
2011-01-01	3.200
2012-01-01	3.125
2013-01-01	3.425
2014-01-01	3.450
2015-01-01	4.275
2016-01-01	4.675
2017-01-01	4.175