Year	Percent
1996-01-01	99.6390
1997-01-01	83.1325
1998-01-01	81.7109
1999-01-01	83.7669
2000-01-01	78.7409
2001-01-01	79.9564
2002-01-01	88.4806
2003-01-01	72.9312
2004-01-01	86.7686
2005-01-01	84.5800
2006-01-01	81.4706
2007-01-01	80.0652
2008-01-01	76.8686
2009-01-01	77.3461
2010-01-01	70.8634
2011-01-01	69.7793
2012-01-01	71.5203
2013-01-01	68.6305
2014-01-01	67.4386