Year	Percent
1996-01-01	93.6132
1997-01-01	96.3523
1998-01-01	95.4172
1999-01-01	97.2918
2000-01-01	96.5129
2001-01-01	97.3251
2002-01-01	97.5787
2003-01-01	98.3805
2004-01-01	96.1930
2005-01-01	96.3761
2006-01-01	97.9354
2007-01-01	98.0751
2008-01-01	98.4750
2009-01-01	96.4436
2010-01-01	96.1777
2011-01-01	97.5838
2012-01-01	97.2073
2013-01-01	96.7881
2014-01-01	95.5917
2015-01-01	97.5422
2016-01-01	97.6010