Year	Percent
2005-01-01	73.775
2006-01-01	74.975
2007-01-01	75.600
2008-01-01	75.925
2009-01-01	76.300
2010-01-01	76.675
2011-01-01	77.300
2012-01-01	77.225
2013-01-01	77.650
2014-01-01	77.725
2015-01-01	77.625
2016-01-01	77.925
2017-01-01	78.275