Year	Percent
1996-01-01	0.23011700000000002
1997-01-01	0.25260900000000003
1998-01-01	0.23770100000000002
1999-01-01	0.23816900000000000
2000-01-01	0.25573100000000000
2001-01-01	0.25573100000000000
2002-01-01	0.25573100000000000
2003-01-01	0.25573100000000000
2004-01-01	0.25573100000000000
2005-01-01	0.25573100000000000
2006-01-01	0.25573100000000000
2007-01-01	0.25573100000000000
2008-01-01	0.25573100000000000
2009-01-01	0.25573100000000000
2010-01-01	0.25573100000000000
2011-01-01	0.25573100000000000
2012-01-01	0.25573100000000000
2013-01-01	0.56166300000000000
2014-01-01	1.99474000000000020
2015-01-01	3.31881999999999970
2016-01-01	3.17197000000000000