Quarter	Percent
1968-01-01	1.361777205668430
1968-04-01	0.957435239562286
1968-07-01	1.031889796551690
1968-10-01	0.908222654862592
1969-01-01	1.225920146560800
1969-04-01	0.988157871769013
1969-07-01	0.920480980323129
1969-10-01	0.763973776140981
1970-01-01	1.137655998606950
1970-04-01	0.978469712796834
1970-07-01	1.015362061708010
1970-10-01	1.016304159573790
1971-01-01	1.269469909019860
1971-04-01	0.941953109215711
1971-07-01	0.926737180776781
1971-10-01	1.115964185835470
1972-01-01	1.612729685777800
1972-04-01	1.140455957780330
1972-07-01	1.125523492812910
1972-10-01	1.101254931480470
1973-01-01	1.363681656645740
1973-04-01	1.184488346669870
1973-07-01	1.031196232564110
1973-10-01	0.942183421534371
1974-01-01	1.432517843588560
1974-04-01	1.104176242830170
1974-07-01	1.133340524643670
1974-10-01	1.315408718743820
1975-01-01	1.960362984291800
1975-04-01	1.620585976990610
1975-07-01	1.699944566343060
1975-10-01	1.917978608801870
1976-01-01	2.439112550754020
1976-04-01	1.990173581702690
1976-07-01	1.805965492676620
1976-10-01	1.786760760822920
1977-01-01	2.236591484647510
1977-04-01	1.838914991367640
1977-07-01	1.756910038581300
1977-10-01	1.765275265515800
1978-01-01	2.332072326869820
1978-04-01	2.068457107470140
1978-07-01	2.051482413449770
1978-10-01	2.148272985085300
1979-01-01	2.183106680310430
1979-04-01	1.879775857177870
1979-07-01	1.818376613836530
1979-10-01	1.917881760236060
1980-01-01	1.949676616549330
1980-04-01	1.667426260429530
1980-07-01	1.717346751628430
1980-10-01	1.981928787781080
1981-01-01	2.163580494003350
1981-04-01	2.072244014126810
1981-07-01	1.892146073769780
1981-10-01	2.059268391426100
1982-01-01	2.254474826994960
1982-04-01	2.129701595768650
1982-07-01	2.057971845985560
1982-10-01	2.227000091505740
1983-01-01	2.704420985464510
1983-04-01	2.350901327186880
1983-07-01	2.337400268798410
1983-10-01	2.335598438791660
1984-01-01	2.588239557413090
1984-04-01	2.434367337384400
1984-07-01	2.326626974309760
1984-10-01	2.332053002014340
1985-01-01	2.519985695390610
1985-04-01	2.256409279920170
1985-07-01	2.154242215995840
1985-10-01	2.446594759028190
1986-01-01	2.573098429824420
1986-04-01	2.371696229313880
1986-07-01	2.368097656979770
1986-10-01	2.450451851268780
1987-01-01	2.729467136273920
1987-04-01	2.669159252211530
1987-07-01	2.445637810032840
1987-10-01	2.338289337963150
1988-01-01	2.519166070883180
1988-04-01	2.080818613471510
1988-07-01	2.071301516387410
1988-10-01	1.954993365984080
1989-01-01	2.016995906273960
1989-04-01	1.980159601484420
1989-07-01	1.850239479375950
1989-10-01	1.773229582520110
1990-01-01	1.882941193276720
1990-04-01	1.662783956190970
1990-07-01	1.664041223826370
1990-10-01	1.708144608998350
1991-01-01	1.804506206773240
1991-04-01	1.631191268096940
1991-07-01	1.637955526990490
1991-10-01	1.568533971925230
1992-01-01	1.745899928946610
1992-04-01	1.725854017651500
1992-07-01	1.750552716177070
1992-10-01	1.821940733805780
1993-01-01	1.966289154869430
1993-04-01	2.014760349760680
1993-07-01	2.077018616427580
1993-10-01	2.241390556098930
1994-01-01	2.474908896631810
1994-04-01	2.369568097752870
1994-07-01	2.521456675422120
1994-10-01	2.500773725869070
1995-01-01	2.679222541205410
1995-04-01	2.614545310374210
1995-07-01	2.594957440307270
1995-10-01	2.886314068619980
1996-01-01	2.951733081451930
1996-04-01	2.969290305813840
1996-07-01	2.845366561997890
1996-10-01	2.887812922041390
1997-01-01	2.898592789736070
1997-04-01	2.790881135467310
1997-07-01	2.982551407605100
1997-10-01	3.040947128422570
1998-01-01	3.357392082526470
1998-04-01	3.750505002807030
1998-07-01	3.773380177062390
1998-10-01	3.889254216706290
1999-01-01	4.202639374138630
1999-04-01	4.453294793551490
1999-07-01	4.117649207682200
1999-10-01	4.040093498505360
2000-01-01	4.543354265862840
2000-04-01	4.357688557006370
2000-07-01	4.179687901437770
2000-10-01	4.190236005140110
2001-01-01	4.454828953749000
2001-04-01	4.647345366542180
2001-07-01	4.508210244882780
2001-10-01	5.045130871755570
2002-01-01	4.849216419317400
2002-04-01	5.081179633886560
2002-07-01	4.958709648966040
2002-10-01	5.034230075657370
2003-01-01	5.084090136715150
2003-04-01	5.116835588472640
2003-07-01	4.698278707287600
2003-10-01	4.665455123459230
2004-01-01	4.652758804417830
2004-04-01	4.345127059746980
2004-07-01	4.316735210750730
2004-10-01	4.222305206834440
2005-01-01	4.380075813261180
2005-04-01	4.078798703859760
2005-07-01	3.865225925741170
2005-10-01	4.018470682199090
2006-01-01	4.192023891364730
2006-04-01	3.775307678721500
2006-07-01	3.772324396371720
2006-10-01	3.861509008999760
2007-01-01	3.780998061429990
2007-04-01	3.496939116733970
2007-07-01	3.430483999458020
2007-10-01	3.487326139479670
2008-01-01	3.789465298226390
2008-04-01	3.742563399136940
2008-07-01	3.628249458496180
2008-10-01	3.844635362211780
2009-01-01	4.304837552626270
2009-04-01	5.060905916623740
2009-07-01	5.215728453268100
2009-10-01	4.856538880693470
2010-01-01	4.940642096722000
2010-04-01	5.054838746914410
2010-07-01	5.029531679189850
2010-10-01	4.848260626491580
2011-01-01	4.754727060970350
2011-04-01	4.697781426353580
2011-07-01	4.378129352258920
2011-10-01	4.299653667805020
2012-01-01	4.407569302016400
2012-04-01	4.368661642162550
2012-07-01	4.181183064340880
2012-10-01	4.001344320054810
2013-01-01	4.391469586206410
2013-04-01	4.097654779898940
2013-07-01	4.064880632700870
2013-10-01	3.775516624093710
2014-01-01	3.633310940014550
2014-04-01	3.506105661519730
2014-07-01	3.577537912935670
2014-10-01	3.430611212952980
2015-01-01	3.562932292070740
2015-04-01	3.377694292129590
2015-07-01	3.411913065774910
2015-10-01	3.245723300294750
2016-01-01	3.302436999135640
2016-04-01	3.109783242196110
2016-07-01	3.130016225204560
2016-10-01	3.013052696925670
2017-01-01	2.946272317282640
2017-04-01	2.806089211658410
2017-07-01	2.804372028945850
2017-10-01	2.700442292129730
2018-01-01	2.480032164506210
2018-04-01	2.448755702627870
2018-07-01	2.453289999968930