Year	Percent
2000-01-01	1.4000000000000000
2001-01-01	2.8000000000000000
2002-01-01	3.5000000000000000
2003-01-01	2.5000000000000000
2004-01-01	1.8000000000000000
2005-01-01	1.8000000000000000
2006-01-01	1.5000000000000000
2007-01-01	1.4000000000000000
2008-01-01	3.0000000000000000
2009-01-01	3.3000000000000000
2010-01-01	2.6468800000000000
2011-01-01	2.1195900000000000
2012-01-01	1.9549400000000001
2013-01-01	1.8729700000000000
2014-01-01	2.2071400000000003
2015-01-01	2.1955000000000000
2016-01-01	2.6228100000000000