Year	Percent
1998-01-01	54.2000
1999-01-01	51.9000
2000-01-01	61.7000
2001-01-01	70.0000
2002-01-01	81.5000
2003-01-01	76.5000
2004-01-01	97.8000
2005-01-01	66.8000
2006-01-01	41.4000
2007-01-01	52.5000
2008-01-01	78.0000
2009-01-01	57.2000
2010-01-01	64.9517
2011-01-01	50.9456
2012-01-01	45.8659
2013-01-01	64.8198
2014-01-01	48.8569
2015-01-01	41.6412
2016-01-01	60.3501