Year	Percent
1993-01-01	88.6762
1994-01-01	86.9540
1995-01-01	77.7661
1996-01-01	62.6784
1997-01-01	58.9641
1998-01-01	57.6469
1999-01-01	58.8232
2000-01-01	75.7593
2001-01-01	93.4140
2002-01-01	96.8749
2003-01-01	98.4836
2004-01-01	99.3333
2005-01-01	99.2208
2006-01-01	99.4208
2007-01-01	99.6350
2008-01-01	99.3603
2009-01-01	98.4327
2010-01-01	98.8591
2011-01-01	99.8536
2012-01-01	99.5005
2013-01-01	98.6058
2014-01-01	97.3824
2015-01-01	94.8089
2016-01-01	92.9545