Year	Percent
2002-01-01	4.0195300000000005
2003-01-01	6.8757300000000000
2004-01-01	7.1984800000000000
2005-01-01	5.7390800000000000
2006-01-01	8.6063700000000000
2007-01-01	8.9941200000000000
2008-01-01	5.9880800000000000
2009-01-01	6.2855300000000005
2010-01-01	7.3092500000000000
2011-01-01	7.6305399999999990
2012-01-01	8.4541399999999990
2013-01-01	10.8763000000000000
2014-01-01	12.7725000000000000
2015-01-01	16.6701000000000000
2016-01-01	18.5158000000000000