Year	Percent
2005-01-01	58.400
2006-01-01	58.950
2007-01-01	59.125
2008-01-01	59.225
2009-01-01	59.425
2010-01-01	59.375
2011-01-01	60.100
2012-01-01	60.075
2013-01-01	60.350
2014-01-01	60.400
2015-01-01	60.200
2016-01-01	61.000
2017-01-01	61.225