Year	Percent
1996-01-01	1.9418700000000000
1997-01-01	1.6558599999999999
1998-01-01	1.3080000000000000
1999-01-01	0.9643090000000000
2000-01-01	1.4334600000000000
2001-01-01	1.4862500000000000
2002-01-01	1.3250800000000000
2003-01-01	1.5830400000000000
2004-01-01	1.6336899999999999
2005-01-01	1.7995400000000001
2006-01-01	1.5942500000000000
2007-01-01	2.0207500000000000
2008-01-01	1.1566299999999998
2009-01-01	1.4885500000000000
2010-01-01	1.7340700000000000
2011-01-01	1.4147000000000000
2012-01-01	1.3268799999999998
2013-01-01	1.2582100000000000
2014-01-01	1.3894200000000000
2015-01-01	1.0929100000000000
2016-01-01	1.0337500000000000