Year	Percent
2003-01-01	37.000
2004-01-01	37.825
2005-01-01	38.550
2006-01-01	38.125
2007-01-01	38.225
2008-01-01	38.175
2009-01-01	38.925
2010-01-01	39.725
2011-01-01	41.375
2012-01-01	44.475
2013-01-01	45.600
2014-01-01	46.925
2015-01-01	48.725
2016-01-01	49.800
2017-01-01	51.275