Quarter	Percent
1996-03-31	5.98
1996-06-30	5.65
1996-09-30	5.77
1996-12-31	5.95
1997-03-31	5.95
1997-06-30	6.345
1997-09-30	6.975
1997-12-31	7.205
1998-03-31	7.225
1998-06-30	7.255
1998-09-30	7.375
1998-12-31	5.6
1999-03-31	5.075
1999-06-30	4.75
1999-09-30	5.215
1999-12-31	3.75
2000-03-31	5.705
2000-06-30	5.495
2000-09-30	5.905
2000-12-31	5.175
2001-03-31	6
2001-06-30	4.85
2001-09-30	5.15
2001-12-31	4.2
2002-03-31	3.5
2002-06-30	3.65
2002-09-30	3.7
2002-12-31	4.25
2003-03-31	3.7
2003-06-30	3.55
2003-09-30	3.45
2003-12-31	3.65
2004-03-31	3.75
2004-06-30	4.5
2004-09-30	4.7
2004-12-31	4.725
2005-03-31	4.74
2005-06-30	4.725
2005-09-30	4.445
2005-12-31	4.575
2006-03-31	4.525
2006-06-30	4.485
2006-09-30	4.795
2006-12-31	4.985
2007-03-31	5.285
2007-06-30	5.875
2007-09-30	5.825
2007-12-31	5.875
2008-03-31	5.175
2008-06-30	5.165
2008-09-30	4.875
2008-12-31	1.7
2009-03-31	0.625
2009-06-30	0.5
2009-09-30	0.455
2009-12-31	0.485
2010-03-31	0.475
2010-06-30	0.525
2010-09-30	0.535
2010-12-31	0.535
2011-03-31	0.525
2011-06-30	0.535
2011-09-30	0.505
2011-12-31	0.2
2012-03-31	0.445
2012-06-30	0.48
2012-09-30	0.445
2012-12-31	0.305
2013-03-31	0.455
2013-06-30	0.41
2013-09-30	0.39
2013-12-31	0.2
2014-03-31	0.37
2014-06-30	0.32
2014-09-30	0.47
2014-12-31	0.375
2015-03-31	0.475
2015-06-30	0.525
2015-09-30	0.465
2015-12-31	0.27
2016-03-31	0.55
2016-06-30	0.53
2016-09-30	0.25
2016-12-31	0.2
2017-03-31	0.215
2017-06-30	0.235
2017-09-30	0.2
2017-12-31	0.43
2018-03-31	0.405
2018-06-30	0.49