Quarter	Percent
1999-07-01	5.19266096381722
1999-10-01	4.24820313693952
2000-01-01	4.92486676906463
2000-04-01	3.56645025800803
2000-07-01	3.49356676645501
2000-10-01	3.38658977149674
2001-01-01	4.42845619806722
2001-04-01	3.36548581139348
2001-07-01	3.13494041395360
2001-10-01	3.09325108745082
2002-01-01	3.71063456145371
2002-04-01	2.79473929773132
2002-07-01	2.60231917800971
2002-10-01	2.46938132877572
2003-01-01	3.74205349975779
2003-04-01	3.34383148495304
2003-07-01	3.33889440655642
2003-10-01	3.45838042292452
2004-01-01	4.15570511155242
2004-04-01	3.52066269688498
2004-07-01	3.30194253312706
2004-10-01	3.17680030803665
2005-01-01	4.07845071863831
2005-04-01	3.64014676654834
2005-07-01	3.35734976889265
2005-10-01	3.27887083900793
2006-01-01	3.57845674806283
2006-04-01	2.97218336532543
2006-07-01	3.08765707980307
2006-10-01	2.88150817588802
2007-01-01	3.05234606326316
2007-04-01	2.76200113834472
2007-07-01	2.74957011517346
2007-10-01	2.70346801794687
2008-01-01	2.95155590861158
2008-04-01	2.81083075496928
2008-07-01	2.66365210960152
2008-10-01	2.66898962508944
2009-01-01	3.22968873196391
2009-04-01	3.41749529931718
2009-07-01	3.05206795791608
2009-10-01	3.00117944082381
2010-01-01	4.23078870652741
2010-04-01	3.05836196872798
2010-07-01	3.32923259285185
2010-10-01	3.05103829514672
2011-01-01	3.93283497434578
2011-04-01	3.26788535736200
2011-07-01	2.88461200954452
2011-10-01	2.68567456567777
2012-01-01	3.55943256449172
2012-04-01	3.20573888441487
2012-07-01	2.84373810256216
2012-10-01	2.62034645791112
2013-01-01	3.26456761038918
2013-04-01	3.08854738844100
2013-07-01	2.76203327080769
2013-10-01	2.72770522401940
2014-01-01	3.83306184517269
2014-04-01	3.98149366794080
2014-07-01	3.33043890841368
2014-10-01	3.25693548094480
2015-01-01	4.06368385386591
2015-04-01	4.06554708896674
2015-07-01	3.38959611021246
2015-10-01	3.11311869315716
2016-01-01	4.11363386982068
2016-04-01	3.81383237431199
2016-07-01	3.50937619225433
2016-10-01	3.42598253129658
2017-01-01	4.15346666946532
2017-04-01	3.89391789047423
2017-07-01	3.36267075326919
2017-10-01	3.13316145516235
2018-01-01	4.06003369618245
2018-04-01	4.00519564197314
2018-07-01	3.87831352339710