Year	Percent
2000-01-01	24.900
2001-01-01	25.125
2002-01-01	25.225
2003-01-01	25.125
2004-01-01	25.350
2005-01-01	25.300
2006-01-01	24.900
2007-01-01	24.950
2008-01-01	24.700
2009-01-01	25.275
2010-01-01	25.625
2011-01-01	25.775
2012-01-01	25.600
2013-01-01	25.575
2014-01-01	25.675
2015-01-01	25.700
2016-01-01	25.575
2017-01-01	25.775