Year	Percent
1993-01-01	9.27871
1994-01-01	16.06940
1995-01-01	15.48410
1996-01-01	13.72260
1997-01-01	17.08210
1998-01-01	19.82780
1999-01-01	22.40180
2000-01-01	14.10080
2001-01-01	12.04180
2002-01-01	10.08340
2003-01-01	11.46380
2004-01-01	10.17220
2005-01-01	12.06710
2006-01-01	12.53120
2007-01-01	16.60040
2008-01-01	12.90630
2009-01-01	14.44410
2010-01-01	12.20150
2011-01-01	10.13570
2012-01-01	11.25790
2013-01-01	11.16050
2014-01-01	8.49023
2015-01-01	9.35484
2016-01-01	8.98051