Year	Percent
1996-01-01	84.98280000000000
1997-01-01	91.74710000000000
1998-01-01	92.75820000000000
1999-01-01	94.09550000000000
2000-01-01	92.23190000000000
2001-01-01	94.31320000000000
2002-01-01	91.57600000000001
2003-01-01	90.42630000000000
2004-01-01	89.06520000000000
2005-01-01	87.67450000000000
2006-01-01	88.21320000000000
2007-01-01	87.68730000000000
2008-01-01	87.39260000000000
2009-01-01	86.83390000000000
2010-01-01	85.56870000000000
2011-01-01	88.56870000000000
2012-01-01	96.42380000000000
2013-01-01	96.59380000000000
2014-01-01	96.56980000000000
2015-01-01	98.76970000000000
2016-01-01	98.76350000000000