Year	Percent
2005-01-01	21.6216
2006-01-01	19.9881
2007-01-01	19.9881
2008-01-01	19.9881
2009-01-01	21.5535
2010-01-01	33.3947
2011-01-01	39.1070
2012-01-01	35.9413
2013-01-01	44.0217
2014-01-01	39.8585