Year	Percent
1996-01-01	94.78580000000000
1997-01-01	90.30440000000000
1998-01-01	96.54120000000000
1999-01-01	91.27040000000000
2000-01-01	89.83020000000000
2001-01-01	88.70480000000000
2002-01-01	89.52200000000000
2003-01-01	86.74520000000000
2004-01-01	95.72200000000001
2005-01-01	96.21340000000000
2006-01-01	96.12880000000000
2007-01-01	96.82810000000000
2008-01-01	94.20090000000000
2009-01-01	93.22950000000000
2010-01-01	89.80130000000000
2011-01-01	87.50490000000000
2012-01-01	88.85840000000000
2013-01-01	89.60180000000000
2014-01-01	88.33560000000000
2015-01-01	84.17900000000000
2016-01-01	86.48320000000000