Year	Percent
1998-01-01	0.48913199999999996
1999-01-01	0.74462000000000000
2000-01-01	0.09686900000000001
2001-01-01	2.10448000000000000
2002-01-01	4.91895000000000000
2003-01-01	4.97434000000000000
2004-01-01	10.16570000000000000
2005-01-01	7.01211000000000100
2006-01-01	4.54568000000000000
2007-01-01	4.20377000000000000
2008-01-01	3.99407000000000000
2009-01-01	4.35483000000000100
2010-01-01	3.70321999999999950
2011-01-01	2.39815000000000000
2012-01-01	2.63436000000000000
2013-01-01	2.04365000000000000
2014-01-01	2.08663000000000000
2015-01-01	2.22059000000000000
2016-01-01	2.32376000000000000
2017-01-01	2.37955999999999970