Year	Percent
1997-01-01	0.0004300000000000000
1998-01-01	0.0007360000000000000
1999-01-01	0.0008759999999999999
2000-01-01	0.0016489999999999999
2001-01-01	0.0300070000000000000
2002-01-01	0.0456899999999999950
2003-01-01	0.0124650000000000000
2004-01-01	0.0150540000000000000
2005-01-01	0.0290490000000000020
2006-01-01	0.0341389999999999960
2007-01-01	0.0404630000000000000
2008-01-01	0.0454139999999999960
2009-01-01	0.0610250000000000000
2010-01-01	0.0661530000000000000
2011-01-01	0.0792030000000000000
2012-01-01	0.0646120000000000000
2013-01-01	0.0721340000000000000
2014-01-01	0.0744789999999999900
2015-01-01	0.0694450000000000000
2016-01-01	0.0617360000000000000