Year	Percent
1993-01-01	94.61960000000000
1994-01-01	97.11340000000000
1995-01-01	98.19130000000000
1996-01-01	98.05190000000000
1997-01-01	98.57590000000000
1998-01-01	98.69180000000000
1999-01-01	98.69180000000000
2000-01-01	98.69180000000000
2001-01-01	99.96230000000000
2002-01-01	98.17410000000000
2003-01-01	98.06350000000000
2004-01-01	99.30070000000000
2005-01-01	99.17399999999999
2006-01-01	99.38460000000000
2007-01-01	99.90750000000000
2008-01-01	99.90850000000000
2009-01-01	99.91660000000000
2010-01-01	99.92840000000000
2011-01-01	99.94090000000000
2012-01-01	98.02830000000000
2013-01-01	98.08340000000000
2014-01-01	99.97150000000000
2015-01-01	99.95440000000000
2016-01-01	99.93710000000000