Quarter	Percent
1986-01-01	4.16145181476846
1986-04-01	3.92003748243011
1986-07-01	4.43994391649790
1986-10-01	4.19894638983576
1987-01-01	4.12815773259396
1987-04-01	4.34315531000614
1987-07-01	4.55518190155916
1987-10-01	5.00304136253041
1988-01-01	5.57322429198849
1988-04-01	5.34743202416918
1988-07-01	6.02409638554217
1988-10-01	5.34053405340534
1989-01-01	5.89026760352818
1989-04-01	5.97104045379907
1989-07-01	6.50297619047619
1989-10-01	6.98431488606096
1990-01-01	6.44401942033250
1990-04-01	6.64811831893396
1990-07-01	7.24067599067599
1990-10-01	6.53149891383056
1991-01-01	6.69064748201439
1991-04-01	6.67621776504298
1991-07-01	6.79126836923955
1991-10-01	7.19761499148211
1992-01-01	6.87853107344633
1992-04-01	6.89364096792347
1992-07-01	7.42713004484305
1992-10-01	7.54322364751813
1993-01-01	7.35192120959911
1993-04-01	7.49896423145974
1993-07-01	7.97470094871442
1993-10-01	7.24439584472389
1994-01-01	7.86577910609972
1994-04-01	7.43544680275788
1994-07-01	8.48688634835239
1994-10-01	8.19518716577540
1995-01-01	8.01222428913101
1995-04-01	8.15813830490546
1995-07-01	8.55263157894737
1995-10-01	8.22222222222222
1996-01-01	8.12670388160457
1996-04-01	8.60353959436765
1996-07-01	8.59053497942387
1996-10-01	8.25875735106111
1997-01-01	8.11601577407454
1997-04-01	8.56055802155992
1997-07-01	8.20895522388060
1997-10-01	8.02469135802469
1998-01-01	8.33647206528562
1998-04-01	8.94624733742639
1998-07-01	9.49042193564542
1998-10-01	8.82279430142464
1999-01-01	8.94795956570573
1999-04-01	9.37343984023964
1999-07-01	10.07364873299210
1999-10-01	8.68211260587942
2000-01-01	8.96989300821100
2000-04-01	8.94592574134064
2000-07-01	8.80189502555791
2000-10-01	8.83489096573209
2001-01-01	8.91298927948143
2001-04-01	9.34065934065934
2001-07-01	9.35081148564295
2001-10-01	8.46402788150361
2002-01-01	8.18858560794045
2002-04-01	9.04248730335687
2002-07-01	8.84025717111771
2002-10-01	8.97672700406354
2003-01-01	8.45899227657227
2003-04-01	9.51216530138159
2003-07-01	9.56097560975610
2003-10-01	9.43235687370852
2004-01-01	8.82103477523325
2004-04-01	8.72458857696031
2004-07-01	8.75030215131738
2004-10-01	8.07520790647222
2005-01-01	7.73208273208273
2005-04-01	8.70087729840164
2005-07-01	7.77911164465786
2005-10-01	6.73053892215569
2006-01-01	7.41758241758242
2006-04-01	8.02763220581229
2006-07-01	7.75000000000000
2006-10-01	7.61463530529817
2007-01-01	7.83639596917605
2007-04-01	7.94403604458146
2007-07-01	7.94215267899478
2007-10-01	7.91997158754588
2008-01-01	8.66942637492608
2008-04-01	7.97255736929264
2008-07-01	8.49905303030303
2008-10-01	7.86330850183280
2009-01-01	8.95346090243326
2009-04-01	8.33530106257379
2009-07-01	9.11237016052880
2009-10-01	8.47377725397761
2010-01-01	8.21853290945484
2010-04-01	8.39325710244017
2010-07-01	8.36973202691536
2010-10-01	8.41397215010621
2011-01-01	8.28905419766206
2011-04-01	8.39152562433424
2011-07-01	8.29378262933080
2011-10-01	8.26505165657286
2012-01-01	7.86783931542667
2012-04-01	9.12230558532809
2012-07-01	9.56926381100107
2012-10-01	9.48687350835322
2013-01-01	8.83720930232558
2013-04-01	8.44566384349278
2013-07-01	8.30849922517583
2013-10-01	8.14119324934633
2014-01-01	7.66043097324177
2014-04-01	7.57879825286271
2014-07-01	7.91578452128911
2014-10-01	7.89658399625643
2015-01-01	7.46738117427773
2015-04-01	7.50956078340480
2015-07-01	8.72072903449071
2015-10-01	8.41924398625430
2016-01-01	7.89174437116216
2016-04-01	7.11635750421585
2016-07-01	7.02382283860866
2016-10-01	6.41936916925811
2017-01-01	6.89959219662736
2017-04-01	6.84406482698204
2017-07-01	6.94535162203353
2017-10-01	6.91817100853962
2018-01-01	6.62805662805663
2018-04-01	7.11087420042644
2018-07-01	6.65040305473059