Year	Percent
2005-01-01	30.275
2006-01-01	30.000
2007-01-01	29.975
2008-01-01	29.725
2009-01-01	29.975
2010-01-01	30.025
2011-01-01	30.200
2012-01-01	29.925
2013-01-01	30.000
2014-01-01	30.000
2015-01-01	29.975
2016-01-01	29.775
2017-01-01	29.575