Year	Percent
1998-01-01	8.7000
1999-01-01	5.2000
2000-01-01	6.1000
2001-01-01	7.9000
2002-01-01	11.5000
2003-01-01	13.7000
2004-01-01	15.0000
2005-01-01	13.4000
2006-01-01	11.9000
2007-01-01	12.8000
2008-01-01	12.1000
2009-01-01	12.5000
2010-01-01	12.2795
2011-01-01	11.7101
2012-01-01	12.1032
2013-01-01	10.9456
2014-01-01	11.5920
2015-01-01	11.0013
2016-01-01	10.7280