Quarter	Percent
1996-03-31	5.93
1996-06-30	5.63
1996-09-30	5.73
1996-12-31	6.22
1997-03-31	6.07
1997-06-30	6.6
1997-09-30	7.045
1997-12-31	7.305
1998-03-31	7.255
1998-06-30	7.515
1998-09-30	7.025
1998-12-31	5.685
1999-03-31	4.895
1999-06-30	4.79
1999-09-30	5.295
1999-12-31	5.535
2000-03-31	5.975
2000-06-30	5.895
2000-09-30	5.825
2000-12-31	5.665
2001-03-31	5.275
2001-06-30	5.075
2001-09-30	4.325
2001-12-31	3.88
2002-03-31	3.995
2002-06-30	3.975
2002-09-30	3.775
2002-12-31	3.855
2003-03-31	3.495
2003-06-30	3.455
2003-09-30	3.545
2003-12-31	3.855
2004-03-31	4.205
2004-06-30	4.635
2004-09-30	4.725
2004-12-31	4.725
2005-03-31	4.805
2005-06-30	4.645
2005-09-30	4.445
2005-12-31	4.445
2006-03-31	4.425
2006-06-30	4.535
2006-09-30	5.035
2006-12-31	5.15
2007-03-31	5.455
2007-06-30	5.815
2007-09-30	5.715
2007-12-31	5.395
2008-03-31	5.025
2008-06-30	5.2
2008-09-30	4.835
2008-12-31	1.355
2009-03-31	0.695
2009-06-30	0.535
2009-09-30	0.425
2009-12-31	0.485
2010-03-31	0.525
2010-06-30	0.535
2010-09-30	0.535
2010-12-31	0.575
2011-03-31	0.625
2011-06-30	0.555
2011-09-30	0.525
2011-12-31	0.445
2012-03-31	0.465
2012-06-30	0.455
2012-09-30	0.455
2012-12-31	0.445
2013-03-31	0.455
2013-06-30	0.455
2013-09-30	0.435
2013-12-31	0.43
2014-03-31	0.435
2014-06-30	0.47
2014-09-30	0.495
2014-12-31	0.455
2015-03-31	0.505
2015-06-30	0.55
2015-09-30	0.555
2015-12-31	0.61
2016-03-31	0.585
2016-06-30	0.515
2016-09-30	0.275
2016-12-31	0.315
2017-03-31	0.275
2017-06-30	0.295
2017-09-30	0.375
2017-12-31	0.485
2018-03-31	0.595
2018-06-30	0.595