Quarter	Percent
1986-01-01	5.35179106607678
1986-04-01	4.92695502721283
1986-07-01	4.72373318064701
1986-10-01	4.71551602428350
1987-01-01	4.90624559424785
1987-04-01	4.50779384917849
1987-07-01	4.02940760639050
1987-10-01	4.31225734886301
1988-01-01	5.30749789385004
1988-04-01	5.60180612388881
1988-07-01	6.21179815209666
1988-10-01	5.74777573789013
1989-01-01	7.32370190244600
1989-04-01	7.19872537659328
1989-07-01	6.84317129629630
1989-10-01	7.20758991787029
1990-01-01	7.42358078602620
1990-04-01	6.79287305122494
1990-07-01	7.41051454138702
1990-10-01	8.28296703296703
1991-01-01	10.05457025920870
1991-04-01	9.78810663021189
1991-07-01	9.89569036508372
1991-10-01	9.63690963690964
1992-01-01	10.86808857492190
1992-04-01	9.34095860566449
1992-07-01	9.16712479384277
1992-10-01	9.83804042296881
1993-01-01	9.74949221394719
1993-04-01	9.39615488762524
1993-07-01	8.40290869916510
1993-10-01	8.55176065660577
1994-01-01	9.48275862068966
1994-04-01	7.80282061420852
1994-07-01	7.11664482306684
1994-10-01	7.17197452229299
1995-01-01	7.18493852459016
1995-04-01	6.52339776195320
1995-07-01	5.90685346459674
1995-10-01	6.51312530955919
1996-01-01	6.78549477566072
1996-04-01	6.35711681050200
1996-07-01	6.31983659738075
1996-10-01	5.76456310679612
1997-01-01	7.44834214320038
1997-04-01	6.72845450168512
1997-07-01	6.85933565175680
1997-10-01	6.57422902223285
1998-01-01	8.00381133873273
1998-04-01	7.99616949964089
1998-07-01	7.07287933094385
1998-10-01	7.61061946902655
1999-01-01	7.54383900200071
1999-04-01	6.99763593380615
1999-07-01	6.38423412792070
1999-10-01	6.15402512796650
2000-01-01	6.98216575358433
2000-04-01	6.40707964601770
2000-07-01	5.48695246971109
2000-10-01	5.32280219780220
2001-01-01	5.92558566835094
2001-04-01	5.27278966029967
2001-07-01	5.35346602608099
2001-10-01	5.29294274300932
2002-01-01	6.00377316613028
2002-04-01	5.61286744315031
2002-07-01	5.44187589868377
2002-10-01	5.04676963236894
2003-01-01	5.88811493252068
2003-04-01	5.17728953665434
2003-07-01	4.67179816121445
2003-10-01	5.00052637119697
2004-01-01	5.56785827269851
2004-04-01	4.72567509644235
2004-07-01	4.12935847466554
2004-10-01	4.01799407013598
2005-01-01	4.65164145312339
2005-04-01	3.86518243661101
2005-07-01	4.06060606060606
2005-10-01	4.21620541512639
2006-01-01	5.02577319587629
2006-04-01	3.99761336515513
2006-07-01	3.99960103730301
2006-10-01	3.95704911513223
2007-01-01	4.76283427679093
2007-04-01	3.94904458598726
2007-07-01	3.82102553949713
2007-10-01	3.28202149288412
2008-01-01	4.63628309873019
2008-04-01	3.77505351235649
2008-07-01	3.88958594730237
2008-10-01	4.51477996388176
2009-01-01	5.45035086032875
2009-04-01	5.95042916385380
2009-07-01	5.90676575620113
2009-10-01	6.45437262357414
2010-01-01	6.90673525769267
2010-04-01	6.51506428708501
2010-07-01	6.58475715108466
2010-10-01	6.40758293838863
2011-01-01	6.92836298597383
2011-04-01	6.13212017818216
2011-07-01	6.34090693031657
2011-10-01	5.97841389019240
2012-01-01	7.25180125385983
2012-04-01	6.75434476279944
2012-07-01	6.93609022556391
2012-10-01	6.78432488850935
2013-01-01	7.10489510489510
2013-04-01	6.59227306826707
2013-07-01	6.31911532385466
2013-10-01	6.39693821760525
2014-01-01	6.71675568027519
2014-04-01	6.03971318257033
2014-07-01	6.16736098532876
2014-10-01	6.28797886393659
2015-01-01	6.49809919547343
2015-04-01	6.42259041510778
2015-07-01	6.08781539014096
2015-10-01	5.33663191376568
2016-01-01	6.18529795563288
2016-04-01	5.57280883367840
2016-07-01	5.27130449737725
2016-10-01	5.79891531080517
2017-01-01	6.31063935649722
2017-04-01	4.93972856781590
2017-07-01	5.32861143139516
2017-10-01	5.08460853372197
2018-01-01	5.44030995237711
2018-04-01	4.74221789883268
2018-07-01	3.98515650209745