Year	Percent
1996-01-01	4.1577800000000010
1997-01-01	4.7874900000000000
1998-01-01	4.7985500000000000
1999-01-01	4.8948000000000000
2000-01-01	4.9290500000000000
2001-01-01	4.2675199999999990
2002-01-01	4.2370500000000000
2003-01-01	3.4516800000000000
2004-01-01	3.9052200000000000
2005-01-01	3.5706800000000003
2006-01-01	5.2672300000000005
2007-01-01	3.4553000000000000
2008-01-01	3.1366400000000003
2009-01-01	2.9713700000000003
2010-01-01	3.2127100000000000
2011-01-01	3.3515800000000002
2012-01-01	1.4181300000000000
2013-01-01	2.5391400000000000
2014-01-01	2.5949700000000000
2015-01-01	0.2686540000000000
2016-01-01	0.4372210000000000