Year	Percent
1998-01-01	12.9000
1999-01-01	12.6000
2000-01-01	12.4000
2001-01-01	12.9000
2002-01-01	12.5000
2003-01-01	11.1000
2004-01-01	11.0000
2005-01-01	12.0000
2006-01-01	11.9000
2007-01-01	11.4000
2008-01-01	11.3000
2009-01-01	12.2000
2010-01-01	11.8701
2011-01-01	12.1078
2012-01-01	11.5861
2013-01-01	13.2793
2014-01-01	13.6827
2015-01-01	14.6595
2016-01-01	14.8121