Year	Percent
1993-01-01	99.55150000000000
1994-01-01	98.80120000000000
1995-01-01	98.62700000000001
1996-01-01	97.82560000000000
1997-01-01	96.73830000000000
1998-01-01	95.90840000000000
1999-01-01	91.11160000000000
2000-01-01	91.54790000000000
2001-01-01	90.98720000000000
2002-01-01	89.92299999999999
2003-01-01	88.19860000000000
2004-01-01	85.94530000000000
2005-01-01	85.67010000000000
2006-01-01	86.76700000000001
2007-01-01	89.42120000000000
2008-01-01	91.66040000000000
2009-01-01	93.38340000000000
2010-01-01	95.22590000000000
2011-01-01	95.61950000000000
2012-01-01	93.20350000000000
2013-01-01	92.19140000000000
2014-01-01	93.47700000000000
2015-01-01	94.55040000000000
2016-01-01	95.28530000000000