Year	Percent
2000-01-01	24.4000
2001-01-01	20.7000
2002-01-01	24.2000
2003-01-01	26.0000
2004-01-01	25.2000
2005-01-01	22.7000
2006-01-01	24.4000
2007-01-01	19.3000
2008-01-01	21.8000
2009-01-01	19.8000
2010-01-01	20.4509
2011-01-01	24.7011
2012-01-01	20.8052
2013-01-01	15.4964
2014-01-01	17.3791
2015-01-01	18.7364
2016-01-01	18.5972