Quarter	Percent
1996-03-31	5.85
1996-06-30	5.45
1996-09-30	5.8
1996-12-31	5.78
1997-03-31	6
1997-06-30	6.375
1997-09-30	7.015
1997-12-31	7.3
1998-03-31	7.225
1998-06-30	7.45
1998-09-30	7.425
1998-12-31	5.45
1999-03-31	5.95
1999-06-30	4.95
1999-09-30	5.325
1999-12-31	3.3
2000-03-31	5.7
2000-06-30	5.225
2000-09-30	5.95
2000-12-31	4.75
2001-03-31	6.225
2001-06-30	4.85
2001-09-30	5.05
2001-12-31	4.75
2002-03-31	3.3
2002-06-30	3.275
2002-09-30	3.4
2002-12-31	4.575
2003-03-31	4.1
2003-06-30	3.25
2003-09-30	3.5
2003-12-31	3.35
2004-03-31	3.65
2004-06-30	4.65
2004-09-30	4.8
2004-12-31	4.775
2005-03-31	4.75
2005-06-30	4.885
2005-09-30	4.375
2005-12-31	4.69
2006-03-31	4.63
2006-06-30	4.475
2006-09-30	4.815
2006-12-31	4.9
2007-03-31	5.225
2007-06-30	5.875
2007-09-30	5.875
2007-12-31	5.975
2008-03-31	5.175
2008-06-30	5.34
2008-09-30	4.75
2008-12-31	1.75
2009-03-31	0.675
2009-06-30	0.5
2009-09-30	0.475
2009-12-31	0.455
2010-03-31	0.455
2010-06-30	0.525
2010-09-30	0.585
2010-12-31	0.525
2011-03-31	0.495
2011-06-30	0.535
2011-09-30	0.485
2011-12-31	0.1
2012-03-31	0.405
2012-06-30	0.48
2012-09-30	0.425
2012-12-31	0.265
2013-03-31	0.455
2013-06-30	0.35
2013-09-30	0.32
2013-12-31	-0.25
2014-03-31	0.125
2014-06-30	0.19
2014-09-30	0.435
2014-12-31	0
2015-03-31	0.46
2015-06-30	0.46
2015-09-30	0.24
2015-12-31	-0.175
2016-03-31	0.34
2016-06-30	0.505
2016-09-30	0.11
2016-12-31	0.015
2017-03-31	0.01
2017-06-30	0.195
2017-09-30	0.115
2017-12-31	0.44
2018-03-31	0.45
2018-06-30	0.49