Quarter	Percent
1999-07-01	5.54764266011052
1999-10-01	4.44618595942195
2000-01-01	4.82131079264802
2000-04-01	3.76785373945491
2000-07-01	3.65571810370803
2000-10-01	3.62679474330033
2001-01-01	4.62020543273625
2001-04-01	3.44385725888763
2001-07-01	3.26236389231917
2001-10-01	3.10762371449362
2002-01-01	3.46386733103226
2002-04-01	2.91465239778835
2002-07-01	2.72516130578983
2002-10-01	2.77275816470659
2003-01-01	3.20804262456982
2003-04-01	3.09022900424326
2003-07-01	3.09931258998659
2003-10-01	3.12806845379760
2004-01-01	3.38211323596348
2004-04-01	3.03809932157514
2004-07-01	3.21874447458377
2004-10-01	3.24217036770356
2005-01-01	3.72227256468755
2005-04-01	3.29431576316081
2005-07-01	3.33853529304069
2005-10-01	3.21633614922660
2006-01-01	3.46624381608375
2006-04-01	3.11079544561506
2006-07-01	3.10684545793183
2006-10-01	3.05065584006277
2007-01-01	3.36231951333523
2007-04-01	3.14383345396376
2007-07-01	2.99962884655390
2007-10-01	2.92985617462181
2008-01-01	3.17943363704724
2008-04-01	2.97021306294577
2008-07-01	2.95203584619017
2008-10-01	3.02751292610009
2009-01-01	3.70234903051852
2009-04-01	3.74140545947719
2009-07-01	3.51911608389935
2009-10-01	3.25920596421227
2010-01-01	3.96113034921193
2010-04-01	3.28059860184090
2010-07-01	3.43126290715098
2010-10-01	3.18858442286008
2011-01-01	3.72027650496866
2011-04-01	3.26177676923496
2011-07-01	2.89606873006905
2011-10-01	2.74816087866464
2012-01-01	3.30794506610734
2012-04-01	3.03990637983435
2012-07-01	2.75554515536824
2012-10-01	2.68483646306294
2013-01-01	3.16114885994427
2013-04-01	2.96113852216257
2013-07-01	2.84548371374326
2013-10-01	2.67075487139774
2014-01-01	3.29787338527682
2014-04-01	3.52578189261546
2014-07-01	3.18349743415852
2014-10-01	3.04505621906658
2015-01-01	3.38662381960373
2015-04-01	3.53548151198582
2015-07-01	3.16750794125694
2015-10-01	2.87103493464407
2016-01-01	3.65684633942138
2016-04-01	3.46807032716481
2016-07-01	3.31870062678369
2016-10-01	3.09113486775096
2017-01-01	3.76281106577012
2017-04-01	3.69728054325514
2017-07-01	3.33805865526295
2017-10-01	3.16297280471316
2018-01-01	3.66994363564570
2018-04-01	3.89214379865355
2018-07-01	3.69712464079843