Year	Percent
1996-01-01	3.5892500000000000
1997-01-01	3.0612200000000000
1998-01-01	3.6799800000000005
1999-01-01	3.9591300000000005
2000-01-01	3.4901400000000002
2001-01-01	1.4031700000000000
2002-01-01	4.1261900000000000
2003-01-01	0.0000000000000000
2004-01-01	6.5864500000000000
2005-01-01	3.7495500000000000
2006-01-01	4.1387199999999990
2007-01-01	3.6059900000000003
2008-01-01	3.6940199999999996
2009-01-01	4.1751400000000000
2010-01-01	4.3818600000000000
2011-01-01	3.6986800000000004
2012-01-01	3.3527800000000000
2013-01-01	3.3527800000000000
2014-01-01	3.3527800000000000
2015-01-01	1.2422400000000000