Year	Percent
1996-01-01	1.6598200000000000
1997-01-01	1.8874099999999998
1998-01-01	3.9919900000000000
1999-01-01	1.8779400000000002
2000-01-01	1.6899000000000000
2001-01-01	2.2350800000000000
2002-01-01	3.2510400000000000
2003-01-01	2.8818400000000000
2004-01-01	3.0186900000000003
2005-01-01	2.5776300000000000
2006-01-01	2.7698200000000000
2007-01-01	3.2971900000000000
2008-01-01	2.8822200000000002
2009-01-01	5.4970099999999995
2010-01-01	5.5793800000000005
2011-01-01	4.7710700000000000
2012-01-01	4.7743100000000000
2013-01-01	3.9931000000000000
2014-01-01	3.9195699999999998
2015-01-01	2.0234099999999997
2016-01-01	2.4259300000000000