Year	Percent
2005-01-01	22.5883
2006-01-01	19.6107
2007-01-01	18.4641
2008-01-01	17.4353
2009-01-01	17.9332
2010-01-01	17.5410
2011-01-01	17.0944
2012-01-01	15.7424
2013-01-01	14.1586
2014-01-01	13.5967
2015-01-01	13.5741
2016-01-01	13.6672