Year	Percent
2001-01-01	11.0000
2002-01-01	15.0000
2003-01-01	18.0000
2004-01-01	18.0000
2005-01-01	18.0000
2006-01-01	18.0000
2007-01-01	18.0000
2008-01-01	18.0000
2009-01-01	30.4146
2010-01-01	28.2438
2011-01-01	25.4396
2012-01-01	28.0086
2013-01-01	26.9542
2014-01-01	27.5123
2015-01-01	28.0161