Year	Percent
2001-01-01	5.0655900000000000
2002-01-01	3.7031500000000000
2003-01-01	3.3246599999999997
2004-01-01	3.6291800000000003
2005-01-01	6.0265400000000000
2006-01-01	6.2148000000000000
2007-01-01	6.3827400000000000
2008-01-01	5.4389500000000000
2009-01-01	7.3193300000000000
2010-01-01	7.5887000000000000
2011-01-01	7.1144000000000000
2012-01-01	8.4415700000000000
2013-01-01	9.2362500000000000
2014-01-01	11.5233000000000000
2015-01-01	13.5199000000000000
2016-01-01	14.1187000000000000