Quarter	Percent
1996-03-31	5.98
1996-06-30	5.7
1996-09-30	5.77
1996-12-31	6
1997-03-31	6.19
1997-06-30	6.965
1997-09-30	7.075
1997-12-31	7.205
1998-03-31	7.235
1998-06-30	7.275
1998-09-30	7.355
1998-12-31	5.8
1999-03-31	5.105
1999-06-30	4.75
1999-09-30	5.225
1999-12-31	4.8
2000-03-31	5.775
2000-06-30	5.655
2000-09-30	5.875
2000-12-31	5.25
2001-03-31	5.6
2001-06-30	4.95
2001-09-30	4.725
2001-12-31	3.95
2002-03-31	3.7
2002-06-30	3.85
2002-09-30	3.8
2002-12-31	3.95
2003-03-31	3.65
2003-06-30	3.65
2003-09-30	3.475
2003-12-31	3.7
2004-03-31	3.8
2004-06-30	4.425
2004-09-30	4.7
2004-12-31	4.725
2005-03-31	4.735
2005-06-30	4.72
2005-09-30	4.455
2005-12-31	4.505
2006-03-31	4.475
2006-06-30	4.505
2006-09-30	4.81
2006-12-31	5.06
2007-03-31	5.295
2007-06-30	5.8
2007-09-30	5.775
2007-12-31	5.525
2008-03-31	5.15
2008-06-30	5.115
2008-09-30	4.925
2008-12-31	1.675
2009-03-31	0.625
2009-06-30	0.5
2009-09-30	0.455
2009-12-31	0.485
2010-03-31	0.505
2010-06-30	0.525
2010-09-30	0.535
2010-12-31	0.555
2011-03-31	0.535
2011-06-30	0.535
2011-09-30	0.505
2011-12-31	0.325
2012-03-31	0.445
2012-06-30	0.475
2012-09-30	0.455
2012-12-31	0.365
2013-03-31	0.455
2013-06-30	0.43
2013-09-30	0.415
2013-12-31	0.335
2014-03-31	0.39
2014-06-30	0.355
2014-09-30	0.48
2014-12-31	0.395
2015-03-31	0.485
2015-06-30	0.525
2015-09-30	0.505
2015-12-31	0.44
2016-03-31	0.55
2016-06-30	0.52
2016-09-30	0.27
2016-12-31	0.245
2017-03-31	0.225
2017-06-30	0.235
2017-09-30	0.22
2017-12-31	0.42
2018-03-31	0.465
2018-06-30	0.49