Year	Percent
1993-01-01	99.1523
1994-01-01	98.6021
1995-01-01	97.1540
1996-01-01	94.7673
1997-01-01	90.0739
1998-01-01	83.6092
1999-01-01	82.8559
2000-01-01	87.1223
2001-01-01	87.2185
2002-01-01	85.6408
2003-01-01	89.7245
2004-01-01	94.2288
2005-01-01	94.6997
2006-01-01	95.7427
2007-01-01	97.5150
2008-01-01	98.3347
2009-01-01	98.5165
2010-01-01	97.6396
2011-01-01	94.1769
2012-01-01	92.2517
2013-01-01	93.1087
2014-01-01	94.3443
2015-01-01	96.6746
2016-01-01	98.0886