Year	Percent
2005-01-01	40.6729131885600
2006-01-01	39.8699092931873
2007-01-01	39.8883620610860
2008-01-01	40.0444991929807
2009-01-01	40.0983919122646
2010-01-01	40.3224261129636
2011-01-01	40.2325991639990
2012-01-01	39.5700571605291
2013-01-01	39.7059915338615
2014-01-01	40.2255866531357
2015-01-01	40.1927564195130
2016-01-01	40.3087234206721
2017-01-01	40.6505413947706