Year	Percent
1993-01-01	84.8894
1994-01-01	84.6467
1995-01-01	87.9852
1996-01-01	92.0890
1997-01-01	95.9482
1998-01-01	98.5223
1999-01-01	98.8401
2000-01-01	99.7597
2001-01-01	99.9427
2002-01-01	99.9550
2003-01-01	98.7188
2004-01-01	98.0813
2005-01-01	99.4594
2006-01-01	99.9607
2007-01-01	99.9575
2008-01-01	99.9599
2009-01-01	99.9641
2010-01-01	99.9162
2011-01-01	99.8688
2012-01-01	99.6967
2013-01-01	99.6836
2014-01-01	99.9086
2015-01-01	96.1002
2016-01-01	91.0369