Year	Percent
2003-01-01	7.13615311458628
2004-01-01	4.13663213144748
2005-01-01	2.28194607024302
2006-01-01	4.96116689278764
2007-01-01	6.54788141133041
2008-01-01	9.09464307167043
2009-01-01	9.45172651530944
2010-01-01	4.87491987645650
2011-01-01	5.00559518073203
2012-01-01	6.72199777331876
2013-01-01	5.60092502322356
2014-01-01	5.34952612720511
2015-01-01	3.39566065540327
2016-01-01	6.72779540721608
2017-01-01	6.14392366175068