Year	Percent
1996-01-01	12.98740
1997-01-01	9.48891
1998-01-01	9.48891
1999-01-01	9.48891
2000-01-01	9.48891
2001-01-01	9.48891
2002-01-01	31.95330
2003-01-01	36.83050
2004-01-01	79.14860
2005-01-01	75.53600
2006-01-01	72.47780
2007-01-01	68.95620
2008-01-01	64.81780
2009-01-01	56.63820
2010-01-01	45.65490
2011-01-01	46.22390
2012-01-01	36.01930
2013-01-01	27.65770
2014-01-01	25.73430
2015-01-01	16.92470
2016-01-01	35.71510