Year	Percent
1998-01-01	14.5000
1999-01-01	12.9000
2000-01-01	12.9000
2001-01-01	10.1000
2002-01-01	8.9000
2003-01-01	8.8000
2004-01-01	8.5000
2005-01-01	8.5000
2006-01-01	8.2000
2007-01-01	8.1000
2008-01-01	8.9000
2009-01-01	9.4000
2010-01-01	12.4309
2011-01-01	12.0392
2012-01-01	12.0733
2013-01-01	12.3092
2014-01-01	12.2451
2015-01-01	13.0405
2016-01-01	10.8741