Year	Percent
1996-01-01	0.009973000000000001
1997-01-01	0.024462000000000000
1998-01-01	0.032681000000000000
1999-01-01	0.037297000000000004
2000-01-01	0.037357999999999995
2001-01-01	0.039279000000000000
2002-01-01	0.044839000000000000
2003-01-01	0.040789000000000000
2004-01-01	0.038807999999999995
2005-01-01	0.037248000000000000
2006-01-01	0.036137000000000000
2007-01-01	0.046937000000000000
2008-01-01	0.064775000000000000
2009-01-01	0.073226000000000000
2010-01-01	0.081703000000000000
2011-01-01	0.108127000000000000
2012-01-01	0.130424000000000000
2013-01-01	0.153805000000000000
2014-01-01	0.168936999999999980
2015-01-01	0.196509000000000000
2016-01-01	0.224636999999999980