Year	Percent
1996-01-01	93.4783
1997-01-01	76.1589
1998-01-01	72.6872
1999-01-01	66.1323
2000-01-01	68.4995
2001-01-01	71.4981
2002-01-01	59.7462
2003-01-01	61.9090
2004-01-01	60.5297
2005-01-01	59.5571
2006-01-01	62.8934
2007-01-01	71.0346
2008-01-01	68.2137
2009-01-01	67.1014
2010-01-01	70.0079
2011-01-01	73.1460
2012-01-01	72.9685
2013-01-01	69.8366
2014-01-01	70.1756
2015-01-01	67.9910
2016-01-01	75.6465