Year	Percent
1999-01-01	0.019003000000000
2000-01-01	3.981150000000000
2001-01-01	8.302750000000000
2002-01-01	9.633700000000000
2003-01-01	12.539500000000000
2004-01-01	14.048900000000000
2005-01-01	14.394000000000000
2006-01-01	19.506600000000000
2007-01-01	22.055900000000000
2008-01-01	4.695220000000000
2009-01-01	13.533200000000000
2010-01-01	14.122100000000000
2011-01-01	8.579410000000001
2012-01-01	8.798130000000000
2013-01-01	8.465420000000000
2014-01-01	5.388420000000000
2015-01-01	7.542089999999999
2016-01-01	12.920900000000000