Year	Percent
2005-01-01	38.2106965640422
2006-01-01	38.9098935733627
2007-01-01	38.9928813872953
2008-01-01	41.4801071532995
2009-01-01	39.6950962362543
2010-01-01	43.8388795677595
2011-01-01	44.2518529637356
2012-01-01	42.0730245658773
2013-01-01	41.0537500390090
2014-01-01	40.8240668703029
2015-01-01	40.8068904591153
2016-01-01	39.2008986108931
2017-01-01	37.7193588665725