Year	Percent
1994-01-01	99.55620000000000
1995-01-01	95.14740000000000
1996-01-01	91.93700000000001
1997-01-01	90.38810000000000
1998-01-01	88.32550000000000
1999-01-01	91.27220000000000
2000-01-01	93.49840000000000
2001-01-01	95.79990000000000
2002-01-01	96.86800000000000
2003-01-01	97.30450000000000
2004-01-01	97.83670000000000
2005-01-01	98.20630000000000
2006-01-01	99.38340000000000
2007-01-01	99.38340000000000
2008-01-01	99.38340000000000
2009-01-01	99.38340000000000
2010-01-01	99.38340000000000
2011-01-01	99.38340000000000
2012-01-01	99.38340000000000
2013-01-01	99.38340000000000
2014-01-01	99.38340000000000
2015-01-01	98.01810000000000
2016-01-01	95.29070000000000