Year	Percent
2000-01-01	19.91
2001-01-01	23.73
2002-01-01	28.43
2003-01-01	27.53
2004-01-01	31.38
2005-01-01	31.38
2006-01-01	31.38
2007-01-01	12.63
2008-01-01	9.75
2009-01-01	15.38
2010-01-01	14.14
2011-01-01	13.11
2012-01-01	13.99
2013-01-01	14.56
2014-01-01	15.63
2015-01-01	18.12
2016-01-01	20.97