Quarter	Percent
1996-03-31	5.92
1996-06-30	5.7
1996-09-30	5.73
1996-12-31	6.02
1997-03-31	5.95
1997-06-30	6.445
1997-09-30	6.975
1997-12-31	7.225
1998-03-31	7.235
1998-06-30	7.375
1998-09-30	7.245
1998-12-31	5.78
1999-03-31	5.025
1999-06-30	4.75
1999-09-30	5.205
1999-12-31	5.2
2000-03-31	5.805
2000-06-30	5.755
2000-09-30	5.825
2000-12-31	5.695
2001-03-31	5.475
2001-06-30	5.025
2001-09-30	4.505
2001-12-31	3.88
2002-03-31	3.825
2002-06-30	3.85
2002-09-30	3.795
2002-12-31	3.905
2003-03-31	3.575
2003-06-30	3.505
2003-09-30	3.515
2003-12-31	3.775
2004-03-31	4.025
2004-06-30	4.455
2004-09-30	4.695
2004-12-31	4.725
2005-03-31	4.715
2005-06-30	4.705
2005-09-30	4.465
2005-12-31	4.495
2006-03-31	4.42
2006-06-30	4.515
2006-09-30	4.805
2006-12-31	5.09
2007-03-31	5.335
2007-06-30	5.725
2007-09-30	5.76
2007-12-31	5.485
2008-03-31	5.16
2008-06-30	5.145
2008-09-30	4.905
2008-12-31	1.575
2009-03-31	0.655
2009-06-30	0.505
2009-09-30	0.455
2009-12-31	0.485
2010-03-31	0.515
2010-06-30	0.525
2010-09-30	0.535
2010-12-31	0.575
2011-03-31	0.555
2011-06-30	0.535
2011-09-30	0.515
2011-12-31	0.375
2012-03-31	0.465
2012-06-30	0.465
2012-09-30	0.455
2012-12-31	0.425
2013-03-31	0.455
2013-06-30	0.445
2013-09-30	0.435
2013-12-31	0.41
2014-03-31	0.435
2014-06-30	0.425
2014-09-30	0.48
2014-12-31	0.425
2015-03-31	0.5
2015-06-30	0.545
2015-09-30	0.525
2015-12-31	0.535
2016-03-31	0.555
2016-06-30	0.52
2016-09-30	0.28
2016-12-31	0.28
2017-03-31	0.245
2017-06-30	0.265
2017-09-30	0.225
2017-12-31	0.455
2018-03-31	0.48
2018-06-30	0.5