Year	Percent
2005-01-01	67.600
2006-01-01	67.800
2007-01-01	69.300
2008-01-01	70.200
2009-01-01	70.200
2010-01-01	68.600
2011-01-01	69.900
2012-01-01	70.600
2013-01-01	71.625
2014-01-01	71.625
2015-01-01	73.225
2016-01-01	74.325
2017-01-01	75.050