Year	Percent
1996-01-01	62.3938
1997-01-01	63.0761
1998-01-01	85.1482
1999-01-01	82.8412
2000-01-01	85.2398
2001-01-01	80.0213
2002-01-01	86.1362
2003-01-01	80.1196
2004-01-01	80.7024
2005-01-01	81.1305
2006-01-01	80.8221
2007-01-01	82.7056
2008-01-01	79.1356
2009-01-01	75.2907
2010-01-01	71.8456
2011-01-01	69.9925
2012-01-01	65.6664
2013-01-01	64.7127
2014-01-01	66.9289
2015-01-01	61.8815
2016-01-01	63.9810