Quarter	Percent
1985-07-01	6.49720
1985-10-01	8.24250
1986-01-01	5.75520
1986-04-01	4.52340
1986-07-01	4.75850
1986-10-01	4.31500
1987-01-01	3.99220
1987-04-01	3.30730
1987-07-01	3.51420
1987-10-01	3.95750
1988-01-01	3.77340
1988-04-01	3.59380
1988-07-01	4.08520
1988-10-01	4.36250
1989-01-01	4.25426
1989-04-01	5.13778
1989-07-01	5.43125
1989-10-01	6.44792
1990-01-01	6.81696
1990-04-01	7.36458
1990-07-01	7.76316
1990-10-01	8.22969
1991-01-01	8.27813
1991-04-01	8.04063
1991-07-01	7.04934
1991-10-01	6.30952
1992-01-01	5.65327
1992-04-01	4.75284
1992-07-01	4.22656
1992-10-01	3.89489
1993-01-01	3.24185
1993-04-01	3.21429
1993-07-01	2.85781
1993-10-01	2.44196
1994-01-01	2.25000
1994-04-01	2.06250
1994-07-01	2.18906
1994-10-01	2.29315
1995-01-01	2.18892
1995-04-01	1.27909
1995-07-01	0.57350
1995-10-01	0.45905
1996-01-01	0.45550
1996-04-01	0.47150
1996-07-01	0.46789
1996-10-01	0.48600
1997-01-01	0.51000
1997-04-01	0.49571
1997-07-01	0.49800
1997-10-01	0.39429
1998-01-01	0.43091
1998-04-01	0.43682
1998-07-01	0.32150
1998-10-01	0.25095
1999-01-01	0.04091
1999-04-01	0.03000
1999-07-01	0.03250
1999-10-01	0.02429
2000-01-01	0.02136
2000-04-01	0.02091
2000-07-01	0.24950
2000-10-01	0.24143
2001-01-01	0.10667
2001-04-01	0.01762
2001-07-01	0.00505
2001-10-01	0.00184
2002-01-01	0.00205
2002-04-01	0.00140
2002-07-01	0.00526
2002-10-01	0.00195
2003-01-01	0.00200
2003-04-01	0.00100
2003-07-01	0.00200
2003-10-01	0.00100
2004-01-01	0.00100
2004-04-01	0.00100
2004-07-01	0.00100
2004-10-01	0.00100
2005-01-01	0.00200
2005-04-01	0.00100
2005-07-01	0.00100
2005-10-01	0.00100
2006-01-01	0.00200
2006-04-01	0.03600
2006-07-01	0.26100
2006-10-01	0.25500
2007-01-01	0.50900
2007-04-01	0.51000
2007-07-01	0.51000
2007-10-01	0.49700
2008-01-01	0.51100
2008-04-01	0.50900
2008-07-01	0.49500
2008-10-01	0.21100
2009-01-01	0.10000
2009-04-01	0.10400
2009-07-01	0.10200
2009-10-01	0.10100
2010-01-01	0.09700
2010-04-01	0.09500
2010-07-01	0.09100
2010-10-01	0.08700
2011-01-01	0.08500
2011-04-01	0.06900
2011-07-01	0.08000
2011-10-01	0.07800
2012-01-01	0.08400
2012-04-01	0.07600
2012-07-01	0.08500
2012-10-01	0.08200
2013-01-01	0.08000
2013-04-01	0.07000
2013-07-01	0.07000
2013-10-01	0.07000
2014-01-01	0.07000
2014-04-01	0.07000
2014-07-01	0.07000
2014-10-01	0.07000
2015-01-01	0.07000
2015-04-01	0.07000
2015-07-01	0.07000
2015-10-01	0.07000
2016-01-01	-0.00300
2016-04-01	-0.05500
2016-07-01	-0.05200
2016-10-01	-0.04400
2017-01-01	-0.04200
2017-04-01	-0.05600
2017-07-01	-0.05800
2017-10-01	-0.04200
2018-01-01	-0.06200
2018-04-01	-0.07100
2018-07-01	-0.05800