Year	Percent
1999-01-01	9.75736
2000-01-01	11.92250
2001-01-01	14.60850
2002-01-01	17.88750
2003-01-01	22.73770
2004-01-01	27.98920
2005-01-01	25.39820
2006-01-01	32.87010
2007-01-01	33.56510
2008-01-01	23.63080
2009-01-01	24.67520
2010-01-01	19.84950
2011-01-01	18.83850
2012-01-01	26.84900
2013-01-01	24.70460
2014-01-01	26.79750
2015-01-01	26.73680
2016-01-01	25.60070