Year	Percent
1996-01-01	1.9771500000000000
1997-01-01	1.8712400000000002
1998-01-01	1.9342400000000002
1999-01-01	1.7067100000000000
2000-01-01	0.8835240000000000
2001-01-01	2.7124599999999996
2002-01-01	2.7691200000000000
2003-01-01	2.6018900000000000
2004-01-01	3.1030300000000000
2005-01-01	1.1756200000000000
2006-01-01	1.7432800000000000
2007-01-01	1.6026700000000000
2008-01-01	1.4734300000000000
2009-01-01	1.8522900000000002
2010-01-01	1.7876100000000000
2011-01-01	1.5755299999999999
2012-01-01	1.7063000000000000
2013-01-01	1.3131600000000000
2014-01-01	1.3225300000000000
2015-01-01	1.0152100000000000
2016-01-01	1.0112700000000001