Year	Percent
2005-01-01	6.400
2006-01-01	6.175
2007-01-01	5.475
2008-01-01	5.025
2009-01-01	6.200
2010-01-01	6.775
2011-01-01	6.750
2012-01-01	7.275
2013-01-01	7.700
2014-01-01	7.400
2015-01-01	6.975
2016-01-01	6.475
2017-01-01	5.850