Year	Percent
1998-01-01	1.0000000000000000
1999-01-01	1.0000000000000000
2000-01-01	1.1000000000000000
2001-01-01	1.3000000000000000
2002-01-01	1.4000000000000000
2003-01-01	1.1000000000000000
2004-01-01	0.8000000000000000
2005-01-01	0.7000000000000000
2006-01-01	0.8000000000000000
2007-01-01	1.4000000000000000
2008-01-01	3.0000000000000000
2009-01-01	5.0000000000000000
2010-01-01	4.3877400000000000
2011-01-01	3.7815000000000000
2012-01-01	3.3172900000000003
2013-01-01	2.4523900000000003
2014-01-01	1.8507099999999999
2015-01-01	1.4734300000000000
2016-01-01	1.3205200000000001