Year	Percent
2005-01-01	59.800
2006-01-01	59.825
2007-01-01	59.200
2008-01-01	59.125
2009-01-01	59.650
2010-01-01	60.800
2011-01-01	60.925
2012-01-01	61.375
2013-01-01	61.675
2014-01-01	62.450
2015-01-01	62.775
2016-01-01	62.725
2017-01-01	62.625