Year	Percent
2005-01-01	25.3616446795829
2006-01-01	25.9929247442926
2007-01-01	26.3872661487185
2008-01-01	27.4482310654362
2009-01-01	25.7860103389940
2010-01-01	30.5320718000724
2011-01-01	31.6875640008752
2012-01-01	31.0856156946552
2013-01-01	30.4428227525000
2014-01-01	30.0790856936177
2015-01-01	30.1989958265068
2016-01-01	29.1627970827021
2017-01-01	28.3164977597256