Quarter	Percent
1962-01-01	0.759582376138278
1962-04-01	0.380958630213143
1962-07-01	0.270705218368943
1962-10-01	0.382222857741723
1963-01-01	1.014983526106880
1963-04-01	0.413684851157225
1963-07-01	0.304754766326451
1963-10-01	0.410001978634901
1964-01-01	0.854181032972338
1964-04-01	0.425239020819806
1964-07-01	0.301790338416850
1964-10-01	0.375186529755368
1965-01-01	0.751686023800860
1965-04-01	0.363569345079837
1965-07-01	0.254493987802578
1965-10-01	0.327985836904083
1966-01-01	0.640417547625430
1966-04-01	0.334855429659899
1966-07-01	0.301399909576582
1966-10-01	0.586666800961087
1967-01-01	1.725013859563820
1967-04-01	1.415324182984520
1967-07-01	1.084212742990370
1967-10-01	1.171791817761230
1968-01-01	1.732971052525600
1968-04-01	0.928417699168740
1968-07-01	0.580657926636960
1968-10-01	0.584932251030348
1969-01-01	0.979251006252456
1969-04-01	0.446528905350986
1969-07-01	0.309138162582386
1969-10-01	0.361077359679929
1970-01-01	0.723674302431446
1970-04-01	0.356867453700408
1970-07-01	0.282266459341760
1970-10-01	0.363412731083448
1971-01-01	0.705034709494435
1971-04-01	0.457555639585920
1971-07-01	0.409781219812664
1971-10-01	0.559908256821200
1972-01-01	0.975883919058236
1972-04-01	0.642586204884433
1972-07-01	0.562322172068312
1972-10-01	0.657508975449732
1973-01-01	0.945959836161251
1973-04-01	0.662863089686005
1973-07-01	0.613985847171418
1973-10-01	0.902633928800366
1974-01-01	1.678286153360600
1974-04-01	1.413000837646350
1974-07-01	1.450612506682040
1974-10-01	2.124195611411870
1975-01-01	3.230589139642470
1975-04-01	3.045688503146590
1975-07-01	2.958834190665170
1975-10-01	3.179892107769490
1976-01-01	3.788329228388620
1976-04-01	3.024719224154780
1976-07-01	2.716348525760860
1976-10-01	2.833335920376540
1977-01-01	3.458280602227850
1977-04-01	2.926832472801570
1977-07-01	2.779855734539430
1977-10-01	2.871255054937710
1978-01-01	3.437969671930110
1978-04-01	2.826100062225640
1978-07-01	2.631090933037900
1978-10-01	2.664190949629370
1979-01-01	3.174791754879260
1979-04-01	2.428620972605070
1979-07-01	2.255037083380140
1979-10-01	2.253566361831010
1980-01-01	2.699538414980770
1980-04-01	2.254231017734440
1980-07-01	2.331317151977370
1980-10-01	2.592171959338330
1981-01-01	3.469354812496910
1981-04-01	3.148439817390930
1981-07-01	3.403113285306550
1981-10-01	3.930630780854510
1982-01-01	5.136591750836820
1982-04-01	4.627202800026060
1982-07-01	4.788931796927030
1982-10-01	5.381691791818030
1983-01-01	6.651174521189220
1983-04-01	6.051897490812150
1983-07-01	5.899848435171220
1983-10-01	5.922598025314040
1984-01-01	6.753802087851660
1984-04-01	6.024989445514420
1984-07-01	5.895561330720210
1984-10-01	5.883332553278870
1985-01-01	6.869004730375360
1985-04-01	6.134221446922390
1985-07-01	5.900782360786460
1985-10-01	5.869363954585710
1986-01-01	6.751810100304460
1986-04-01	5.890252699507490
1986-07-01	5.593873054494470
1986-10-01	5.482258261651570
1987-01-01	6.458656034963160
1987-04-01	5.805450371530930
1987-07-01	5.668956308327090
1987-10-01	5.633660235857950
1988-01-01	6.498905395076180
1988-04-01	5.869503162624780
1988-07-01	5.658893915634290
1988-10-01	5.488638433620370
1989-01-01	5.948538215370550
1989-04-01	5.254609129831840
1989-07-01	5.048098369877040
1989-10-01	4.994822219771510
1990-01-01	5.464915656622710
1990-04-01	4.825251875263510
1990-07-01	4.632517544186220
1990-10-01	4.346663141819410
1991-01-01	5.498889113310440
1991-04-01	5.210892970234320
1991-07-01	5.791788856304980
1991-10-01	5.775290529128540
1992-01-01	6.797272980713180
1992-04-01	6.340138127158240
1992-07-01	6.594936708860760
1992-10-01	6.752151854002070
1993-01-01	7.824587211809170
1993-04-01	7.543864103801130
1993-07-01	7.948808562197090
1993-10-01	8.160393950052760
1994-01-01	9.092284799112210
1994-04-01	8.411144006680330
1994-07-01	8.210392902408110
1994-10-01	7.890724269377380
1995-01-01	8.560509554140130
1995-04-01	7.911852475323280
1995-07-01	7.977359831467800
1995-10-01	8.056095038716680
1996-01-01	9.325990965842760
1996-04-01	8.581502714220490
1996-07-01	8.659408391643720
1996-10-01	8.885258263164510
1997-01-01	10.356403654904300
1997-04-01	9.621880514242500
1997-07-01	9.657851861135480
1997-10-01	9.632294164668260
1998-01-01	10.368468288791400
1998-04-01	9.152035861038480
1998-07-01	8.768549335602210
1998-10-01	8.517764986105600
1999-01-01	9.213227002438950
1999-04-01	8.353042161990210
1999-07-01	8.165124299780000
1999-10-01	7.926897624136570
2000-01-01	8.540736388761550
2000-04-01	7.655262940224810
2000-07-01	7.501080113625000
2000-10-01	7.325233146789620
2001-01-01	8.204491583302900
2001-04-01	7.599245876984060
2001-07-01	7.701046753385360
2001-10-01	7.839339017765550
2002-01-01	8.905994370724400
2002-04-01	8.411412343684560
2002-07-01	8.559595161481340
2002-10-01	8.738448161956350
2003-01-01	10.207776756326800
2003-04-01	9.631565423001890
2003-07-01	9.464603771382400
2003-10-01	9.244385337196980
2004-01-01	10.347766888914300
2004-04-01	9.669804190459900
2004-07-01	9.630564179409370
2004-10-01	9.526610491877290
2005-01-01	11.504494268978900
2005-04-01	11.291227571539500
2005-07-01	11.075304176257800
2005-10-01	10.799707136480700
2006-01-01	11.280157701290100
2006-04-01	10.189941696263000
2006-07-01	9.793246718192310
2006-10-01	9.747553647246000
2007-01-01	9.480961130947900
2007-04-01	8.591960410968170
2007-07-01	8.407505269012000
2007-10-01	8.165692058996990
2008-01-01	8.221384923797790
2008-04-01	7.788144670130540
2008-07-01	7.135729137143850
2008-10-01	6.965797808829030
2009-01-01	8.057148223690070
2009-04-01	7.794758248898940
2009-07-01	7.845564411456480
2009-10-01	7.275149235656990
2010-01-01	7.882248439401670
2010-04-01	6.942747350279420
2010-07-01	6.624856353456080
2010-10-01	6.420696765764730
2011-01-01	6.585835710714390
2011-04-01	5.778332046444900
2011-07-01	5.658507820505380
2011-10-01	5.287020708662180
2012-01-01	5.817433275854920
2012-04-01	5.298698522660470
2012-07-01	5.277310278762790
2012-10-01	5.129586386515420
2013-01-01	5.735525333835690
2013-04-01	5.190371151817400
2013-07-01	5.050898303708340
2013-10-01	4.951053092885680
2014-01-01	5.431827662094200
2014-04-01	4.899828441400900
2014-07-01	4.825896256514510
2014-10-01	4.768813533606430
2015-01-01	4.999535912075570
2015-04-01	4.661181800172330
2015-07-01	4.380166269375360
2015-10-01	4.458936902988760
2016-01-01	4.518380880531260
2016-04-01	4.198574254644210
2016-07-01	4.005438313752780
2016-10-01	3.768538104980870
2017-01-01	4.092542813132380
2017-04-01	3.776488501278150
2017-07-01	3.631745537329770
2017-10-01	3.485746088108400
2018-01-01	3.613636468679660
2018-04-01	3.458778778592590