Quarter	Percent
1998-01-01	12.12809270278730
1998-04-01	12.87919105907400
1998-07-01	9.40667859272510
1998-10-01	9.41312741312741
1999-01-01	11.14963784866700
1999-04-01	11.00036376864310
1999-07-01	7.93861590674340
1999-10-01	8.95828584454069
2000-01-01	10.72572038420490
2000-04-01	10.35228009509400
2000-07-01	7.31085705963737
2000-10-01	7.97319680770968
2001-01-01	9.21599758070613
2001-04-01	9.86147993971148
2001-07-01	7.32717889074653
2001-10-01	8.09010627151624
2002-01-01	9.59454338764684
2002-04-01	10.65967985069270
2002-07-01	7.89819136522754
2002-10-01	8.30123121081653
2003-01-01	9.89227734789865
2003-04-01	10.96116574545980
2003-07-01	7.59107103904603
2003-10-01	8.20442826812254
2004-01-01	9.75184032784397
2004-04-01	10.15386848599220
2004-07-01	7.16481264637002
2004-10-01	7.85098987456551
2005-01-01	9.35822813515761
2005-04-01	9.55404820320392
2005-07-01	6.60598943041691
2005-10-01	7.14977284575855
2006-01-01	8.40065828845003
2006-04-01	8.74497415278576
2006-07-01	6.06824071408005
2006-10-01	6.30376742806289
2007-01-01	7.52430815258040
2007-04-01	7.37154569227507
2007-07-01	5.41580560108316
2007-10-01	5.85215605749487
2008-01-01	6.42731792921907
2008-04-01	7.04439980605389
2008-07-01	4.94852680156194
2008-10-01	5.84481508339376
2009-01-01	8.35660737909746
2009-04-01	10.53739301248770
2009-07-01	7.71072102132598
2009-10-01	8.87996430165105
2010-01-01	10.46682325308280
2010-04-01	10.28523254180130
2010-07-01	7.58768790264853
2010-10-01	8.01532341240607
2011-01-01	9.27940424910564
2011-04-01	9.39993062781824
2011-07-01	7.19141323792486
2011-10-01	7.72034701465335
2012-01-01	8.80954123070169
2012-04-01	9.35276886595062
2012-07-01	7.21818440929172
2012-10-01	7.72384508382751
2013-01-01	9.66789667896679
2013-04-01	10.05937827453720
2013-07-01	7.43078467938603
2013-10-01	8.10970651290012
2014-01-01	9.83025830258303
2014-04-01	10.29753112470990
2014-07-01	7.93501805054152
2014-10-01	9.22493066705590
2015-01-01	10.54446727326090
2015-04-01	11.18615449556780
2015-07-01	8.49827882960413
2015-10-01	9.24757993546495
2016-01-01	10.23990637799880
2016-04-01	10.09007750855390
2016-07-01	7.44749480323991
2016-10-01	8.35575594502218
2017-01-01	9.93806921675774
2017-04-01	10.08269057049540
2017-07-01	7.42780484360658
2017-10-01	8.04228269409328
2018-01-01	8.75143348623853
2018-04-01	8.42526199669057