Year	Percent
2003-01-01	4.76787954830615
2004-01-01	7.08283313325330
2005-01-01	5.81395348837209
2006-01-01	6.22914349276974
2007-01-01	4.71216511140951
2008-01-01	6.03036107120255
2009-01-01	6.10185089107557
2010-01-01	5.09644672113741
2011-01-01	6.24537449048885
2012-01-01	5.88744033781276
2013-01-01	6.38616639991271
2014-01-01	5.76032969361449
2015-01-01	7.32721959321929
2016-01-01	6.62828287136004
2017-01-01	5.50360986056823