Year	Percent
1996-01-01	4.0742300000000000
1997-01-01	4.0773500000000000
1998-01-01	4.3581500000000000
1999-01-01	3.1482099999999997
2000-01-01	2.8040900000000000
2001-01-01	2.4954900000000000
2002-01-01	1.0144400000000000
2003-01-01	2.6585799999999997
2004-01-01	2.7550000000000000
2005-01-01	3.7082500000000000
2006-01-01	3.9937099999999996
2007-01-01	3.6500100000000000
2008-01-01	2.7126000000000000
2009-01-01	1.6572799999999999
2010-01-01	1.1632500000000000
2011-01-01	2.3055300000000000
2012-01-01	1.8271600000000000
2013-01-01	2.4028200000000000
2014-01-01	3.1067299999999998
2015-01-01	4.1408200000000000
2016-01-01	3.1443700000000000