Year	Percent
2005-01-01	71.000
2006-01-01	72.675
2007-01-01	74.025
2008-01-01	74.725
2009-01-01	75.400
2010-01-01	76.350
2011-01-01	77.900
2012-01-01	78.250
2013-01-01	78.625
2014-01-01	78.850
2015-01-01	79.225
2016-01-01	79.700
2017-01-01	79.975