Quarter	Percent
1978-04-01	5.32712491651179
1978-07-01	4.68353366920972
1978-10-01	4.25938423145373
1979-01-01	5.22697012169790
1979-04-01	4.93138678839467
1979-07-01	4.94950085417186
1979-10-01	4.84569159808004
1980-01-01	5.02007772084030
1980-04-01	4.89406736906141
1980-07-01	4.62883069582493
1980-10-01	4.58024081972405
1981-01-01	5.03215670391502
1981-04-01	4.71555820013524
1981-07-01	4.49122766830923
1981-10-01	4.62499962095273
1982-01-01	5.36594237618772
1982-04-01	5.52676289095037
1982-07-01	5.40206471280633
1982-10-01	6.13474707518679
1983-01-01	7.23511563987221
1983-04-01	7.58540315837480
1983-07-01	7.34725090888874
1983-10-01	6.57065882004396
1984-01-01	7.28089120737647
1984-04-01	7.03729122806750
1984-07-01	6.02480027000470
1984-10-01	5.73192387898354
1985-01-01	6.59293994432434
1985-04-01	6.41651834943311
1985-07-01	5.83783235196657
1985-10-01	5.69716631387319
1986-01-01	6.64729436714851
1986-04-01	6.11877976570852
1986-07-01	6.14926527334467
1986-10-01	5.62161801885943
1987-01-01	6.61807342674562
1987-04-01	6.38586926322183
1987-07-01	5.86564948857905
1987-10-01	5.57387639769981
1988-01-01	6.36214758958372
1988-04-01	6.35188617881931
1988-07-01	5.28593357481155
1988-10-01	5.03166760835326
1989-01-01	5.71013151993879
1989-04-01	5.18102309125918
1989-07-01	4.64397194787567
1989-10-01	4.55381801884506
1990-01-01	5.20406943705612
1990-04-01	5.06493533702713
1990-07-01	5.25150269796198
1990-10-01	5.18564464625649
1991-01-01	6.67741920228404
1991-04-01	6.79617787573436
1991-07-01	6.67294136416774
1991-10-01	6.71024372913302
1992-01-01	7.77168866416294
1992-04-01	7.34435401644478
1992-07-01	7.11357241772501
1992-10-01	7.25257083447782
1993-01-01	8.15029969196460
1993-04-01	7.38144572737211
1993-07-01	7.60317428083055
1993-10-01	7.56109812281356
1994-01-01	7.77819100551193
1994-04-01	7.19021428677530
1994-07-01	6.90418833410733
1994-10-01	6.70974876564879
1995-01-01	6.99206743957496
1995-04-01	5.76026340722382
1995-07-01	5.71012887203897
1995-10-01	5.57030288937061
1996-01-01	6.25012530202877
1996-04-01	6.28223194478127
1996-07-01	6.26796416671619
1996-10-01	6.20277835808631
1997-01-01	6.98395234337558
1997-04-01	6.33789024646151
1997-07-01	6.00908434997106
1997-10-01	5.54493810380058
1998-01-01	6.18196685921416
1998-04-01	5.67329395708357
1998-07-01	5.54042797866829
1998-10-01	5.13341368855051
1999-01-01	5.63208812051109
1999-04-01	5.10439141052790
1999-07-01	5.00293259902634
1999-10-01	4.66537551066528
2000-01-01	5.61456599897146
2000-04-01	4.94122397706495
2000-07-01	4.07969660396656
2000-10-01	4.18200607391753
2001-01-01	4.83041496366990
2001-04-01	5.07437453705075
2001-07-01	4.78911004485565
2001-10-01	4.93753795623286
2002-01-01	5.20691857915084
2002-04-01	4.75913965955892
2002-07-01	4.53279607720024
2002-10-01	4.42511496771790
2003-01-01	5.07275782218185
2003-04-01	4.66294594460158
2003-07-01	4.50626655533745
2003-10-01	4.20018231928677
2004-01-01	4.74529277836090
2004-04-01	4.28309005318056
2004-07-01	4.04981646628529
2004-10-01	3.54061620140411
2005-01-01	4.39705888335467
2005-04-01	4.05660245980349
2005-07-01	3.65283344659387
2005-10-01	3.55963978825552
2006-01-01	4.35250242386137
2006-04-01	3.93209509930809
2006-07-01	3.48824803644740
2006-10-01	3.34858249194348
2007-01-01	4.22730162645493
2007-04-01	3.79069501780778
2007-07-01	3.45315365222077
2007-10-01	3.22161467584869
2008-01-01	3.81778460306081
2008-04-01	3.50934898993771
2008-07-01	3.52045230954207
2008-10-01	3.46517587360621
2009-01-01	4.50183692709978
2009-04-01	4.16481063183690
2009-07-01	4.19369815640582
2009-10-01	4.03299834189880
2010-01-01	4.33676496645157
2010-04-01	4.08556943550520
2010-07-01	3.87693234717536
2010-10-01	3.83879836177830
2011-01-01	4.23601462642268
2011-04-01	4.00127087352586
2011-07-01	4.09843184240904
2011-10-01	3.84199393027685
2012-01-01	4.27870525479410
2012-04-01	4.13864852464968
2012-07-01	3.85340849871467
2012-10-01	3.96306451913017
2013-01-01	4.52280567163615
2013-04-01	4.58519822753813
2013-07-01	4.24732696973092
2013-10-01	4.00821688408234
2014-01-01	5.21847181091753
2014-04-01	4.66711049678228
2014-07-01	4.79305338560105
2014-10-01	4.51772530483780
2015-01-01	5.11177687377270
2015-04-01	4.79511016325688
2015-07-01	4.85904155136268
2015-10-01	4.50652634377400
2016-01-01	5.19088443132635
2016-04-01	4.68088283311871
2016-07-01	4.32922895141406
2016-10-01	4.19098029378571
2017-01-01	5.13810409848279
2017-04-01	4.53067290668145
2017-07-01	4.20596166134049
2017-10-01	4.03021798539274
2018-01-01	4.67098457186833
2018-04-01	4.40236412295464
2018-07-01	4.14015278517738