Year	Percent
2003-01-01	49.875
2004-01-01	49.675
2005-01-01	49.550
2006-01-01	49.475
2007-01-01	49.100
2008-01-01	48.900
2009-01-01	48.575
2010-01-01	48.550
2011-01-01	48.650
2012-01-01	48.475
2013-01-01	48.275
2014-01-01	48.375
2015-01-01	48.375
2016-01-01	48.375
2017-01-01	48.600