Year	Percent
2003-01-01	1.7054900000000002
2004-01-01	1.6808800000000000
2005-01-01	1.9983500000000000
2006-01-01	1.9512200000000002
2007-01-01	3.1366600000000000
2008-01-01	7.4470000000000000
2009-01-01	3.4715800000000003
2010-01-01	1.4692000000000000
2011-01-01	2.8960400000000000
2012-01-01	3.3993100000000000
2013-01-01	3.2872600000000000
2014-01-01	2.1076200000000003
2015-01-01	2.3626900000000000
2016-01-01	1.9312700000000000