Year	Percent
1996-01-01	2.4343200000000000
1997-01-01	2.0831200000000000
1998-01-01	1.6286800000000000
1999-01-01	1.9351500000000000
2000-01-01	2.1820100000000000
2001-01-01	1.4865600000000000
2002-01-01	1.3368600000000000
2003-01-01	0.5462899999999999
2004-01-01	3.3181100000000000
2005-01-01	2.0150799999999998
2006-01-01	1.8666599999999998
2007-01-01	1.8903599999999998
2008-01-01	2.2266800000000000
2009-01-01	1.9354799999999999
2010-01-01	1.7707700000000002
2011-01-01	1.6079299999999999
2012-01-01	1.6533099999999998
2013-01-01	1.5935300000000000
2014-01-01	1.5155700000000000
2015-01-01	1.4173500000000000
2016-01-01	1.3857400000000000