Year	Percent
1993-01-01	94.4994
1994-01-01	95.3129
1995-01-01	97.4649
1996-01-01	99.1839
1997-01-01	98.9687
1998-01-01	97.3516
1999-01-01	95.7112
2000-01-01	95.7499
2001-01-01	96.1030
2002-01-01	95.8769
2003-01-01	96.3143
2004-01-01	96.7171
2005-01-01	97.4666
2006-01-01	98.8321
2007-01-01	99.5582
2008-01-01	99.6232
2009-01-01	99.8084
2010-01-01	99.9781
2011-01-01	99.9817
2012-01-01	99.9858
2013-01-01	99.9904
2014-01-01	99.9945
2015-01-01	99.9944
2016-01-01	99.9948