Year	Percent
2005-01-01	73.400
2006-01-01	73.900
2007-01-01	74.200
2008-01-01	74.800
2009-01-01	74.900
2010-01-01	73.600
2011-01-01	74.175
2012-01-01	74.275
2013-01-01	74.325
2014-01-01	74.775
2015-01-01	75.025
2016-01-01	75.575
2017-01-01	75.600