Year	Percent
1996-01-01	11.51580
1997-01-01	31.00650
1998-01-01	20.45630
1999-01-01	17.27550
2000-01-01	18.27970
2001-01-01	18.27900
2002-01-01	22.43450
2003-01-01	20.96570
2004-01-01	22.88010
2005-01-01	24.51360
2006-01-01	20.61590
2007-01-01	21.32020
2008-01-01	19.80750
2009-01-01	10.90120
2010-01-01	8.49584
2011-01-01	5.99254
2012-01-01	8.22236
2013-01-01	10.18380
2014-01-01	9.86717
2015-01-01	11.29680
2016-01-01	11.23580