Year	Percent
1998-01-01	8.30000
1999-01-01	8.00000
2000-01-01	9.60000
2001-01-01	9.40000
2002-01-01	9.60000
2003-01-01	11.40000
2004-01-01	11.20000
2005-01-01	8.80000
2006-01-01	9.50000
2007-01-01	9.60000
2008-01-01	9.20000
2009-01-01	10.70000
2010-01-01	10.40390
2011-01-01	9.92206
2012-01-01	10.59250
2013-01-01	10.35870
2014-01-01	10.83810
2015-01-01	10.44800
2016-01-01	10.55970