Quarter	Percent
1998-01-01	5.94005555447641
1998-04-01	5.90399439383322
1998-07-01	6.77252985884908
1998-10-01	7.29090277509746
1999-01-01	8.46889117242182
1999-04-01	8.48825926644673
1999-07-01	9.02639466305714
1999-10-01	9.03882877148313
2000-01-01	9.56116504854369
2000-04-01	8.76251439277141
2000-07-01	8.60994234065763
2000-10-01	8.36078675997583
2001-01-01	8.51950389295356
2001-04-01	7.99095734224494
2001-07-01	8.27359266658832
2001-10-01	7.87744453816128
2002-01-01	7.69594421573069
2002-04-01	7.01768172888016
2002-07-01	7.24804687500000
2002-10-01	7.29278322387012
2003-01-01	7.60607072035812
2003-04-01	7.54442522409184
2003-07-01	7.99255777516647
2003-10-01	8.10509429532827
2004-01-01	8.70452494015148
2004-04-01	8.21015487159380
2004-07-01	8.20404738208146
2004-10-01	8.16937553464500
2005-01-01	8.35865669315880
2005-04-01	7.80352429746934
2005-07-01	7.77792729579577
2005-10-01	7.77191129883844
2006-01-01	7.96984383414109
2006-04-01	7.06734194765930
2006-07-01	7.02401536983670
2006-10-01	6.53093397931326
2007-01-01	6.02665636468998
2007-04-01	5.29247374000193
2007-07-01	5.12402088772846
2007-10-01	4.84291187739464
2008-01-01	4.69930231217206
2008-04-01	4.21373052035073
2008-07-01	4.27396109721878
2008-10-01	4.38243227840888
2009-01-01	5.76805851874429
2009-04-01	6.32961783439490
2009-07-01	7.28992031947558
2009-10-01	7.24733166425089
2010-01-01	8.04501399546814
2010-04-01	7.12600372949728
2010-07-01	7.07691725625213
2010-10-01	6.87089384099816
2011-01-01	7.15987244015830
2011-04-01	6.72162818722623
2011-07-01	6.54244859777400
2011-10-01	6.42152638130805
2012-01-01	7.09454265949270
2012-04-01	6.69797094809979
2012-07-01	6.95673549655850
2012-10-01	7.16214430030778
2013-01-01	7.44215134459037
2013-04-01	6.74072679344756
2013-07-01	6.94319206492336
2013-10-01	6.68912687508234
2014-01-01	6.77548856233904
2014-04-01	6.03317679139524
2014-07-01	5.89155173713166
2014-10-01	5.73624185032786
2015-01-01	5.96221292001358
2015-04-01	4.93394395130133
2015-07-01	4.83328004814474
2015-10-01	4.45544554455446
2016-01-01	4.34758081197465
2016-04-01	3.92829043497808
2016-07-01	3.97032508201610
2016-10-01	3.56200037181632
2017-01-01	3.44441123729827
2017-04-01	2.96308743628522
2017-07-01	2.76863325319031
2017-10-01	2.38713506695849
2018-01-01	2.40905716406830
2018-04-01	2.18585298196949