Quarter	Percent
1969-01-01	3.424291064740500
1969-04-01	0.756347920043220
1969-07-01	0.912506709608159
1969-10-01	1.675675675675680
1970-01-01	2.286336418072940
1970-04-01	0.598802395209581
1970-07-01	0.648999459167117
1970-10-01	0.870985302123027
1971-01-01	1.427786930258100
1971-04-01	0.656096227446692
1971-07-01	0.485698866702644
1971-10-01	0.919415900486750
1972-01-01	1.033732317736670
1972-04-01	0.434546442151005
1972-07-01	0.643776824034335
1972-10-01	0.589496248660236
1973-01-01	0.969305331179322
1973-04-01	0.431499460625674
1973-07-01	0.584174190122146
1973-10-01	0.694815606627472
1974-01-01	1.177730192719490
1974-04-01	0.749063670411985
1974-07-01	0.805152979066022
1974-10-01	1.075847229693380
1975-01-01	1.621621621621620
1975-04-01	1.253405994550410
1975-07-01	1.089324618736380
1975-10-01	1.633097441480680
1976-01-01	2.186987424822310
1976-04-01	1.029252437703140
1976-07-01	1.077586206896550
1976-10-01	1.346257404415720
1977-01-01	1.726929303831620
1977-04-01	0.856072766185126
1977-07-01	1.007423117709440
1977-10-01	1.391118245050830
1978-01-01	2.014846235418880
1978-04-01	1.281366791243990
1978-07-01	1.273209549071620
1978-10-01	1.806588735387890
1979-01-01	2.330508474576270
1979-04-01	1.156677181913770
1979-07-01	1.041124414367520
1979-10-01	1.418067226890760
1980-01-01	1.629863301787590
1980-04-01	0.887265135699374
1980-07-01	1.146430432516940
1980-10-01	1.348547717842320
1981-01-01	2.020725388601040
1981-04-01	1.447028423772610
1981-07-01	1.489470980996400
1981-10-01	2.426432627774910
1982-01-01	3.211462450592880
1982-04-01	2.021696252465480
1982-07-01	2.312992125984250
1982-10-01	3.414151410192970
1983-01-01	4.728720756595320
1983-04-01	2.882703777335980
1983-07-01	3.114186851211070
1983-10-01	3.216229589312220
1984-01-01	5.514524864598720
1984-04-01	3.379721669980120
1984-07-01	3.085210577864840
1984-10-01	3.789370078740160
1985-01-01	4.827586206896550
1985-04-01	3.070827142149580
1985-07-01	2.996070726915520
1985-10-01	3.578431372549020
1986-01-01	4.536489151873770
1986-04-01	2.414982750123210
1986-07-01	2.377486656962640
1986-10-01	3.317073170731710
1987-01-01	5.026842362127870
1987-04-01	2.938295788442700
1987-07-01	3.006789524733270
1987-10-01	3.458353628835850
1988-01-01	4.601076847772880
1988-04-01	2.758620689655170
1988-07-01	2.590420332355820
1988-10-01	3.137254901960780
1989-01-01	3.545051698670610
1989-04-01	2.549019607843140
1989-07-01	2.184466019417480
1989-10-01	3.028822667318030
1990-01-01	3.583535108958840
1990-04-01	2.666020358700920
1990-07-01	2.674307545367720
1990-10-01	3.090822634331910
1991-01-01	3.918791312559020
1991-04-01	3.044719314938150
1991-07-01	2.963311382878640
1991-10-01	3.479078514339440
1992-01-01	3.708920187793430
1992-04-01	3.381869422263970
1992-07-01	2.968460111317250
1992-10-01	3.762192289828150
1993-01-01	4.664179104477610
1993-04-01	3.791030975497000
1993-07-01	3.684937816674340
1993-10-01	3.987019007881320
1994-01-01	3.893164327750110
1994-04-01	2.851969216840200
1994-07-01	3.123605533244090
1994-10-01	3.205417607223480
1995-01-01	3.955056179775280
1995-04-01	2.926609635299420
1995-07-01	2.801244997776790
1995-10-01	3.183856502242150
1996-01-01	5.324909747292420
1996-04-01	3.384476534296030
1996-07-01	3.201082055906220
1996-10-01	3.653585926928280
1997-01-01	4.943310657596370
1997-04-01	3.440470801267540
1997-07-01	3.677130044843050
1997-10-01	3.692030616839260
1998-01-01	5.163043478260870
1998-04-01	3.887884267631100
1998-07-01	3.237410071942450
1998-10-01	3.611738148984200
1999-01-01	4.650302778162990
1999-04-01	3.454823322372990
1999-07-01	3.014217134416540
1999-10-01	3.477212666326670
2000-01-01	4.758824616521900
2000-04-01	2.688445698949610
2000-07-01	2.654010966225870
2000-10-01	3.076567198704600
2001-01-01	3.913165005124380
2001-04-01	3.168509181738290
2001-07-01	2.964971959179920
2001-10-01	3.655388586706000
2002-01-01	5.110901368570080
2002-04-01	3.655438464433570
2002-07-01	3.410475030450670
2002-10-01	3.859649122807020
2003-01-01	5.131627393225330
2003-04-01	3.967017865322950
2003-07-01	3.904614544461640
2003-10-01	4.364412552795310
2004-01-01	5.785638960789950
2004-04-01	5.042686931231820
2004-07-01	4.747348432217130
2004-10-01	5.006310475389150
2005-01-01	5.670763536278650
2005-04-01	5.472406283304760
2005-07-01	5.174996595396980
2005-10-01	5.433589462129530
2006-01-01	6.085663848369410
2006-04-01	4.920425007980300
2006-07-01	4.449921577414300
2006-10-01	4.338720692010020
2007-01-01	4.949453364438960
2007-04-01	4.554164252929900
2007-07-01	4.389838660312190
2007-10-01	4.064568055803970
2008-01-01	4.456874774449660
2008-04-01	3.468412670323840
2008-07-01	3.691834942932400
2008-10-01	3.944150473564850
2009-01-01	5.079063023877490
2009-04-01	5.538311457963820
2009-07-01	5.704317488006980
2009-10-01	5.615655233069480
2010-01-01	5.759091523590640
2010-04-01	5.116525892185910
2010-07-01	4.828456983629400
2010-10-01	4.255131317589940
2011-01-01	5.180858234104700
2011-04-01	4.644399400722660
2011-07-01	3.965314392784000
2011-10-01	4.410987849973590
2012-01-01	4.514449829474060
2012-04-01	5.038945215612900
2012-07-01	5.106437990174960
2012-10-01	5.058977719528180
2013-01-01	6.009625999028570
2013-04-01	5.137757754288680
2013-07-01	5.222668604154200
2013-10-01	5.124196630189340
2014-01-01	6.079349650967570
2014-04-01	5.749566724436740
2014-07-01	5.706625813864420
2014-10-01	5.785159620362380
2015-01-01	6.230352776807540
2015-04-01	6.186982451623980
2015-07-01	5.967884688329750
2015-10-01	5.966404422708910
2016-01-01	6.800274066461120
2016-04-01	6.613469251336900
2016-07-01	6.377561496447780
2016-10-01	5.926453342268390
2017-01-01	6.587514362313290
2017-04-01	5.780467445742900
2017-07-01	5.821368330110670
2017-10-01	5.467159652694110
2018-01-01	5.645534474780190
2018-04-01	4.839710444674250