Quarter	Percent
1998-01-01	5.97798409527167
1998-04-01	4.65220965279681
1998-07-01	4.77536359889301
1998-10-01	4.88357555868104
1999-01-01	4.84354323966685
1999-04-01	4.57805171143932
1999-07-01	4.33310765064320
1999-10-01	4.30734087037324
2000-01-01	4.48498305928294
2000-04-01	3.81014378984855
2000-07-01	4.02596910963053
2000-10-01	3.79495142689416
2001-01-01	4.13834541289572
2001-04-01	3.82838035841755
2001-07-01	3.96283903770305
2001-10-01	4.10576296434224
2002-01-01	4.37529029261496
2002-04-01	4.49606386517352
2002-07-01	5.02921612583146
2002-10-01	6.07268031728463
2003-01-01	6.32962588473205
2003-04-01	6.13127668973642
2003-07-01	6.12462733262174
2003-10-01	6.47425034995948
2004-01-01	6.34518236154031
2004-04-01	6.31709254845445
2004-07-01	6.79021442782404
2004-10-01	7.03769735511975
2005-01-01	7.47281858822231
2005-04-01	7.19564300515284
2005-07-01	7.69272936576096
2005-10-01	7.96148726271449
2006-01-01	7.71786959776516
2006-04-01	7.24685097333552
2006-07-01	7.46228057449587
2006-10-01	8.16274634456453
2007-01-01	8.36578342057124
2007-04-01	7.84576879828793
2007-07-01	7.83583432293354
2007-10-01	7.80728198277885
2008-01-01	7.57200455622051
2008-04-01	7.22368373635086
2008-07-01	7.63703329240991
2008-10-01	7.77524099441908
2009-01-01	8.81877169705011
2009-04-01	9.05049916199082
2009-07-01	9.80722098255112
2009-10-01	10.05505122315800
2010-01-01	10.55629115049060
2010-04-01	10.56130254243460
2010-07-01	10.89768146080740
2010-10-01	11.06400862462770
2011-01-01	12.35637458243090
2011-04-01	12.06830215642810
2011-07-01	12.42630803242450
2011-10-01	13.87324074590510
2012-01-01	14.80882544285210
2012-04-01	14.85941546429890
2012-07-01	15.65214177477180
2012-10-01	16.80073503215770
2013-01-01	17.54837732419430
2013-04-01	16.37339583057700
2013-07-01	15.50110600646590
2013-10-01	15.31231049120680
2014-01-01	15.11217641418980
2014-04-01	13.90102031086110
2014-07-01	13.11191473163300
2014-10-01	13.45523912289490
2015-01-01	13.73603082851640
2015-04-01	11.92801661155120
2015-07-01	11.91351725996800
2015-10-01	12.20117796512300
2016-01-01	12.42092599060810
2016-04-01	10.83515759700890
2016-07-01	10.54500095950870
2016-10-01	10.47273849001310
2017-01-01	10.10999614048630
2017-04-01	8.83603355164886
2017-07-01	8.46197827329903
2017-10-01	8.07361916240984
2018-01-01	7.86114092930532
2018-04-01	6.73172598545733