Year	Percent
2005-01-01	78.0514
2006-01-01	79.9721
2007-01-01	80.1226
2008-01-01	81.8743
2009-01-01	81.2753
2010-01-01	80.7735
2011-01-01	83.4837
2012-01-01	82.5934
2013-01-01	85.4469
2014-01-01	85.5352
2015-01-01	73.2878
2016-01-01	66.9039