Year	Percent
1996-01-01	33.2725
1997-01-01	39.0640
1998-01-01	44.4746
1999-01-01	47.0802
2000-01-01	42.8426
2001-01-01	43.0235
2002-01-01	42.4848
2003-01-01	35.8477
2004-01-01	79.2076
2005-01-01	82.2747
2006-01-01	84.5767
2007-01-01	82.5567
2008-01-01	93.9214
2009-01-01	98.8275
2010-01-01	98.1781
2011-01-01	95.6414
2012-01-01	96.2720
2013-01-01	94.8214
2014-01-01	99.7185
2015-01-01	93.0198
2016-01-01	90.3517