Year	Percent
2001-01-01	1.4956300000000000
2002-01-01	1.4677200000000001
2003-01-01	1.4950700000000001
2004-01-01	1.3764000000000000
2005-01-01	1.1694500000000000
2006-01-01	1.1695400000000000
2007-01-01	1.0283100000000000
2008-01-01	1.0924200000000002
2009-01-01	1.3793900000000000
2010-01-01	1.4353500000000000
2011-01-01	1.3629000000000000
2012-01-01	1.4733800000000000
2013-01-01	1.4106600000000000
2014-01-01	1.4179600000000000
2015-01-01	1.4909200000000000