Year	Percent
1999-01-01	19.6000
2000-01-01	15.5000
2001-01-01	20.7000
2002-01-01	18.0000
2003-01-01	15.2000
2004-01-01	16.8000
2005-01-01	15.0000
2006-01-01	14.2000
2007-01-01	13.9000
2008-01-01	14.0000
2009-01-01	18.1000
2010-01-01	20.8329
2011-01-01	18.8956
2012-01-01	18.0557
2013-01-01	18.2638
2014-01-01	15.6024
2015-01-01	12.3076
2016-01-01	12.6931