Year	Percent
1996-01-01	22.82690
1997-01-01	19.89320
1998-01-01	21.06870
1999-01-01	13.94800
2000-01-01	11.98610
2001-01-01	9.82536
2002-01-01	10.74750
2003-01-01	10.06500
2004-01-01	10.20150
2005-01-01	10.68610
2006-01-01	10.30380
2007-01-01	10.91680
2008-01-01	12.42930
2009-01-01	13.66850
2010-01-01	14.12060
2011-01-01	12.61340
2012-01-01	12.44240
2013-01-01	11.18680
2014-01-01	11.22980
2015-01-01	11.70060
2016-01-01	13.04410