Year	Percent
2005-01-01	57.7349824261964
2006-01-01	56.6640866289663
2007-01-01	55.6417569243074
2008-01-01	53.4035993732404
2009-01-01	52.6448324096071
2010-01-01	48.2153417463743
2011-01-01	46.0573238887859
2012-01-01	45.3505238475992
2013-01-01	45.1176809775824
2014-01-01	44.3441396723335
2015-01-01	44.1774710098564
2016-01-01	43.8755264457449
2017-01-01	42.9267449464049