Year	Percent
1998-01-01	52.9482
1999-01-01	50.8586
2000-01-01	48.9069
2001-01-01	50.0000
2002-01-01	87.5000
2003-01-01	87.5000
2004-01-01	63.6364
2005-01-01	43.2385
2006-01-01	39.3857
2007-01-01	37.1410
2008-01-01	25.1620
2009-01-01	28.0806
2010-01-01	9.8847
2011-01-01	14.7015
2012-01-01	14.0520
2013-01-01	16.3031
2014-01-01	18.6775
2015-01-01	14.0285
2016-01-01	11.9932