Year	Percent
1985-01-01	8.24250
1986-01-01	4.31500
1987-01-01	3.95750
1988-01-01	4.36250
1989-01-01	6.44792
1990-01-01	8.22969
1991-01-01	6.30952
1992-01-01	3.89489
1993-01-01	2.44196
1994-01-01	2.29315
1995-01-01	0.45905
1996-01-01	0.48600
1997-01-01	0.39429
1998-01-01	0.25095
1999-01-01	0.02429
2000-01-01	0.24143
2001-01-01	0.00184
2002-01-01	0.00195
2003-01-01	0.00100
2004-01-01	0.00100
2005-01-01	0.00100
2006-01-01	0.25500
2007-01-01	0.49700
2008-01-01	0.21100
2009-01-01	0.10100
2010-01-01	0.08700
2011-01-01	0.07800
2012-01-01	0.08200
2013-01-01	0.07000
2014-01-01	0.07000
2015-01-01	0.07000
2016-01-01	-0.04400
2017-01-01	-0.04200