Year	Percent
1996-01-01	1.6466700000000000
1997-01-01	1.7510800000000000
1998-01-01	1.1676799999999998
1999-01-01	2.1079000000000000
2000-01-01	1.9190400000000000
2001-01-01	2.1150800000000000
2002-01-01	2.0147900000000000
2003-01-01	1.8196000000000000
2004-01-01	1.3124300000000000
2005-01-01	1.6182400000000000
2006-01-01	1.4986000000000000
2007-01-01	1.4984000000000000
2008-01-01	1.4803800000000000
2009-01-01	1.4041700000000001
2010-01-01	1.3598700000000001
2011-01-01	1.2134500000000000
2012-01-01	1.2090400000000000
2013-01-01	1.1183700000000000
2014-01-01	1.1876300000000000
2015-01-01	1.3334900000000000
2016-01-01	1.3690500000000000