Year	Percent
1998-01-01	10.20000
1999-01-01	16.20000
2000-01-01	13.60000
2001-01-01	12.40000
2002-01-01	10.50000
2003-01-01	12.00000
2004-01-01	12.80000
2005-01-01	13.20000
2006-01-01	12.20000
2007-01-01	11.30000
2008-01-01	10.00000
2009-01-01	11.70000
2010-01-01	12.25930
2011-01-01	10.27370
2012-01-01	9.56852
2013-01-01	13.50810
2014-01-01	14.06980
2015-01-01	16.51890
2016-01-01	16.94660