Year	Percent
2005-01-01	7.76594298851474
2006-01-01	6.25736353338591
2007-01-01	5.50718063590864
2008-01-01	5.92473246022148
2009-01-01	7.73684800688910
2010-01-01	6.44305284746470
2011-01-01	5.45057499926726
2012-01-01	4.94361853854341
2013-01-01	4.46907189468953
2014-01-01	4.97937176562323
2015-01-01	4.95631528215928
2016-01-01	5.34098670241144
2017-01-01	5.49562488181666