Year	Percent
2003-01-01	5.900
2004-01-01	4.700
2005-01-01	4.500
2006-01-01	4.700
2007-01-01	5.075
2008-01-01	6.300
2009-01-01	5.925
2010-01-01	5.150
2011-01-01	6.100
2012-01-01	5.350
2013-01-01	5.625
2014-01-01	5.050
2015-01-01	6.075
2016-01-01	6.925
2017-01-01	8.175