Year	Percent
1996-01-01	61.5330
1997-01-01	61.5291
1998-01-01	71.0223
1999-01-01	58.6755
2000-01-01	54.7926
2001-01-01	63.2863
2002-01-01	61.7646
2003-01-01	60.0637
2004-01-01	56.5480
2005-01-01	56.7745
2006-01-01	59.1538
2007-01-01	56.3251
2008-01-01	55.0544
2009-01-01	51.5949
2010-01-01	51.0172
2011-01-01	50.7602
2012-01-01	53.3573
2013-01-01	55.8047
2014-01-01	54.8927