Year	Percent
1996-01-01	35.3750
1997-01-01	36.9100
1998-01-01	35.8800
1999-01-01	40.9500
2000-01-01	37.9808
2001-01-01	36.5000
2002-01-01	36.8400
2003-01-01	37.7250
2004-01-01	37.3300
2005-01-01	36.8350
2006-01-01	39.0300
2007-01-01	36.9300
2008-01-01	31.1800
2009-01-01	31.0700
2010-01-01	30.4700
2011-01-01	30.7150
2012-01-01	28.1500
2013-01-01	27.1100
2014-01-01	28.3200
2015-01-01	27.9600