Year	Percent
1996-01-01	4.3268200000000000
1997-01-01	3.9664300000000003
1998-01-01	3.5384700000000000
1999-01-01	3.6902900000000000
2000-01-01	2.9014100000000000
2001-01-01	3.1812099999999996
2002-01-01	2.5237300000000000
2003-01-01	2.0537799999999997
2004-01-01	2.7369700000000000
2005-01-01	2.7767700000000000
2006-01-01	1.7407200000000000
2007-01-01	2.2219300000000000
2008-01-01	2.2417900000000000
2009-01-01	7.5688100000000010
2010-01-01	8.9296200000000000
2011-01-01	5.8980700000000000
2012-01-01	3.9041300000000003
2013-01-01	3.3401800000000000
2014-01-01	2.7738400000000003
2015-01-01	3.5644800000000000
2016-01-01	3.7459000000000000