Year	Percent
2005-01-01	50.0304060456763
2006-01-01	50.5524182352387
2007-01-01	51.0402050435208
2008-01-01	50.9681649650786
2009-01-01	49.3301118480249
2010-01-01	48.7420594449994
2011-01-01	48.5928935340189
2012-01-01	47.9058739848113