Year	Percent
2005-01-01	58.5943471514615
2006-01-01	58.9498751027931
2007-01-01	58.5070946325767
2008-01-01	57.8103138090475
2009-01-01	55.0581897685037
2010-01-01	55.5004408197804
2011-01-01	55.0766176910366
2012-01-01	55.4036512751909
2013-01-01	54.5817443439655
2014-01-01	53.7168385451778
2015-01-01	53.4001654775380
2016-01-01	53.1348408051253
2017-01-01	53.1518616545442