Year	Percent
2005-01-01	2.71483652308436
2006-01-01	2.71416571391920
2007-01-01	2.95491255467484
2008-01-01	2.89420270771836
2009-01-01	4.02043345806193
2010-01-01	3.95498723780233
2011-01-01	3.88365967556752
2012-01-01	3.68018705247546
2013-01-01	3.71727085951922
2014-01-01	3.63742846407662
2015-01-01	3.38959920650171
2016-01-01	3.00980071288568
2017-01-01	2.77964358344590