Year	Percent
1999-01-01	93.1
2000-01-01	73.7
2001-01-01	67.6
2002-01-01	64.8
2003-01-01	73.8
2004-01-01	69.2
2005-01-01	65.5
2006-01-01	65.5
2007-01-01	65.5
2008-01-01	65.5
2009-01-01	65.5
2010-01-01	0.0
2011-01-01	0.0
2012-01-01	0.0
2013-01-01	0.0
2014-01-01	0.0
2015-01-01	0.0
2016-01-01	0.0