date,value
1947-01-01,0.6083784153456497
1947-04-01,0.609721076162105
1947-07-01,0.608908393866021
1947-10-01,0.6058327284315635
1948-01-01,0.5988569235034441
1948-04-01,0.5856914349790574
1948-07-01,0.5938226623694353
1948-10-01,0.5934631555298799
1949-01-01,0.6045814715766065
1949-04-01,0.6068664667267885
1949-07-01,0.6018549174591067
1949-10-01,0.6079625292740047
1950-01-01,0.5997690747895765
1950-04-01,0.5973487632357688
1950-07-01,0.5924505022777713
1950-10-01,0.5981214451935853
1951-01-01,0.6026913639416634
1951-04-01,0.6096045998687825
1951-07-01,0.6088165519387081
1951-10-01,0.6082546922595584
1952-01-01,0.6195347573478073
1952-04-01,0.6200020098735035
1952-07-01,0.6200168617459907
1952-10-01,0.6219537559201573
1953-01-01,0.622117071490497
1953-04-01,0.6262407711535732
1953-07-01,0.6298264597913794
1953-10-01,0.6399925031906064
1954-01-01,0.6312222689548543
1954-04-01,0.629412060643546
1954-07-01,0.6248304034273893
1954-10-01,0.6217890268825657
1955-01-01,0.6126598984491266
1955-04-01,0.6138540581711114
1955-07-01,0.6173184873572561
1955-10-01,0.6189321459634182
1956-01-01,0.6252185309058701
1956-04-01,0.6278740553005914
1956-07-01,0.6276929863918808
1956-10-01,0.6290776939649884
1957-01-01,0.6289140669560425
1957-04-01,0.6306359855995997
1957-07-01,0.631275217718935
1957-10-01,0.6371454636528405
1958-01-01,0.6381603514012815
1958-04-01,0.6344392109678019
1958-07-01,0.6334278318747689
1958-10-01,0.6263772163722239
1959-01-01,0.6276821313899403
1959-04-01,0.6230612125048124
1959-07-01,0.6281450929653686
1959-10-01,0.6283647277144645
1960-01-01,0.6287304794376395
1960-04-01,0.6341129194969399
1960-07-01,0.6342106035389845
1960-10-01,0.6358571539823158
1961-01-01,0.6358214903770518
1961-04-01,0.6316346580725783
1961-07-01,0.6294401102810029
1961-10-01,0.6245978015435805
1962-01-01,0.6261641429541577
1962-04-01,0.6294383755203744
1962-07-01,0.6272373789122463
1962-10-01,0.6250680311147477
1963-01-01,0.6260441560149964
1963-04-01,0.6245271932393799
1963-07-01,0.6242072265185938
1963-10-01,0.6241870887599907
1964-01-01,0.6224421789694911
1964-04-01,0.624186729025817
1964-07-01,0.6248587942218679
1964-10-01,0.6260943877509653
1965-01-01,0.6192389096301713
1965-04-01,0.6195248902073475
1965-07-01,0.6213991143304978
1965-10-01,0.6210954695185902
1966-01-01,0.6213733054622614
1966-04-01,0.628812532897157
1966-07-01,0.6345410439655317
1966-10-01,0.6351704455193343
1967-01-01,0.6381378058433544
1967-04-01,0.6398885557039865
1967-07-01,0.6400797738685182
1967-10-01,0.6409992766353209
1968-01-01,0.6429022669556047
1968-04-01,0.6425273783379132
1968-07-01,0.6442953100535135
1968-10-01,0.6461129341872766
1969-01-01,0.6481455674553221
1969-04-01,0.6524767731804338
1969-07-01,0.6578132049265463
1969-10-01,0.6645613842351002
1970-01-01,0.6722083458584974
1970-04-01,0.669374456337566
1970-07-01,0.6674741885202268
1970-10-01,0.6688327405913265
1971-01-01,0.6630171274896361
1971-04-01,0.6621798339416919
1971-07-01,0.6601473760947305
1971-10-01,0.6578757030327812
1972-01-01,0.6622040030289148
1972-04-01,0.6627447778732819
1972-07-01,0.6575157242259427
1972-10-01,0.6513049016645608
1973-01-01,0.6543283930252514
1973-04-01,0.6561578672626882
1973-07-01,0.6562636487115617
1973-10-01,0.6536817784681099
1974-01-01,0.661867297123694
1974-04-01,0.6664105170530404
1974-07-01,0.6691538904684915
1974-10-01,0.6703638579016826
1975-01-01,0.6693834235072111
1975-04-01,0.6640847586601845
1975-07-01,0.6553784095801422
1975-10-01,0.655885521054615
1976-01-01,0.6547076377127188
1976-04-01,0.6575872768307908
1976-07-01,0.6588075575427591
1976-10-01,0.6618427370472305
1977-01-01,0.6613398488388464
1977-04-01,0.6574789602800266
1977-07-01,0.6552300216228141
1977-10-01,0.6570485476499984
1978-01-01,0.6624282715481907
1978-04-01,0.6536201937324001
1978-07-01,0.6572955703341105
1978-10-01,0.6589495636629964
1979-01-01,0.6625434956659199
1979-04-01,0.6663983816780745
1979-07-01,0.6715284189972658
1979-10-01,0.6747239675873461
1980-01-01,0.6796498597806506
1980-04-01,0.6890841541281622
1980-07-01,0.6818823750087402
1980-10-01,0.6712846247413512
1981-01-01,0.6692467909383778
1981-04-01,0.6705560618494689
1981-07-01,0.6630856845591563
1981-10-01,0.6705332530435616
1982-01-01,0.67800971638073
1982-04-01,0.6747097051399109
1982-07-01,0.6759046217217088
1982-10-01,0.6774146498232428
1983-01-01,0.6736533036639107
1983-04-01,0.6693367642137962
1983-07-01,0.6660177021932331
1983-10-01,0.6619014209146405
1984-01-01,0.6528382497586704
1984-04-01,0.6511208849619471
1984-07-01,0.6521580382279977
1984-10-01,0.6524859770344912
1985-01-01,0.6513236217931916
1985-04-01,0.6540628028333719
1985-07-01,0.6538047835663496
1985-10-01,0.6606249535949519
1986-01-01,0.6605254540416635
1986-04-01,0.6643650954732834
1986-07-01,0.6681598437772928
1986-10-01,0.6724629389770097
1987-01-01,0.6720420582618504
1987-04-01,0.6670652008537966
1987-07-01,0.6636504147659186
1987-10-01,0.6657217204466175
1988-01-01,0.6638686034728136
1988-04-01,0.664534926148388
1988-07-01,0.6621561543760714
1988-10-01,0.6599970124842932
1989-01-01,0.6585555478320384
1989-04-01,0.6611439584296093
1989-07-01,0.6626412398082295
1989-10-01,0.6694888209567638
1990-01-01,0.6682091921862252
1990-04-01,0.6692619959302936
1990-07-01,0.6723560225080867
1990-10-01,0.6735284387088395
1991-01-01,0.6702542490255436
1991-04-01,0.6713510506713778
1991-07-01,0.6724132451645258
1991-10-01,0.674780690730665
1992-01-01,0.6737842755498423
1992-04-01,0.6737630196922413
1992-07-01,0.6751008346253575
1992-10-01,0.6723529948356868
1993-01-01,0.6736829969357027
1993-04-01,0.6706198003503961
1993-07-01,0.671656472110852
1993-10-01,0.6632963419646527
1994-01-01,0.6607164142414361
1994-04-01,0.6596213970442787
1994-07-01,0.6562553511214648
1994-10-01,0.6539121107311822
1995-01-01,0.6559701338613535
1995-04-01,0.6555738093042379
1995-07-01,0.651220423104702
1995-10-01,0.6508823955342234
1996-01-01,0.6473732287982445
1996-04-01,0.6452517215896348
1996-07-01,0.6465221491022942
1996-10-01,0.6436499558591049
1997-01-01,0.6434958479813145
1997-04-01,0.6433230318286399
1997-07-01,0.6402886640673335
1997-10-01,0.6432538996969799
1998-01-01,0.6491487159710018
1998-04-01,0.649111206925486
1998-07-01,0.6481029573189314
1998-10-01,0.6510341003826273
1999-01-01,0.6505133588972059
1999-04-01,0.6529178401031199
1999-07-01,0.6546576456184123
1999-10-01,0.6575811550336886
2000-01-01,0.6625705564558826
2000-04-01,0.6595599496789912
2000-07-01,0.6620712253408733
2000-10-01,0.6628986050669864
2001-01-01,0.6639022571877444
2001-04-01,0.6610704911291052
2001-07-01,0.6615246312380217
2001-10-01,0.6680128084276639
2002-01-01,0.6595463848327876
2002-04-01,0.6577681296352063
2002-07-01,0.6558727664996438
2002-10-01,0.6508345687273474
2003-01-01,0.6505442965994249
2003-04-01,0.6523732526401681
2003-07-01,0.6497860805720833
2003-10-01,0.6508374468085106
2004-01-01,0.6449711137340827
2004-04-01,0.6446137670189214
2004-07-01,0.6454556666252409
2004-10-01,0.6435859072915634
2005-01-01,0.6390454507542402
2005-04-01,0.6359578801128635
2005-07-01,0.636467608818986
2005-10-01,0.6293901443437488
2006-01-01,0.6293748691416502
2006-04-01,0.6259930271304797
2006-07-01,0.6247807376028346
2006-10-01,0.6337475277352526
2007-01-01,0.6436702723861117
2007-04-01,0.6393540445643207
2007-07-01,0.6463533381253224
2007-10-01,0.6517900934233538
2008-01-01,0.6573101618037307
2008-04-01,0.6564321233859619
2008-07-01,0.6545934791540534
2008-10-01,0.6692126124910318
2009-01-01,0.6565011573988558
2009-04-01,0.6567189813879825
2009-07-01,0.6507138381104542
2009-10-01,0.6411545987357181
2010-01-01,0.6326481677692796
2010-04-01,0.6337128951136074
2010-07-01,0.6263326637581997
2010-10-01,0.6256993416875772
2011-01-01,0.6322756692900284
2011-04-01,0.6259924103870965
2011-07-01,0.6272211288723802
2011-10-01,0.6170763659127133
2012-01-01,0.6156128385619858
2012-04-01,0.6155123456745444
2012-07-01,0.6220246504476044
2012-10-01,0.6243017454280488
2013-01-01,0.6202889662517074
2013-04-01,0.6217775292734937
2013-07-01,0.6206445805090647
2013-10-01,0.6209786879506154
2014-01-01,0.6268982539200408
2014-04-01,0.6176338530892241
2014-07-01,0.6149816057765753
2014-10-01,0.6191152764938156
2015-01-01,0.6242011515400795
2015-04-01,0.6249048693694498
2015-07-01,0.6281725094561957
2015-10-01,0.6314003977404554
2016-01-01,0.6302788819132691
2016-04-01,0.6335083496562373
2016-07-01,0.6335926912953757
2016-10-01,0.6346399107981465
2017-01-01,0.6331762739318758
2017-04-01,0.6350024927881166
2017-07-01,0.6377127907157908
2017-10-01,0.6372955420301714
2018-01-01,0.6359617926565824
2018-04-01,0.6341210650893983
2018-07-01,0.6336380587657874
2018-10-01,0.6327078907985384
2019-01-01,0.6367208771163801
2019-04-01,0.6360158368369752
2019-07-01,0.634240113023134
2019-10-01,0.635962171812672
2020-01-01,0.6478238718724197
2020-04-01,0.6828274221115513
2020-07-01,0.6557892079518922
2020-10-01,0.647615549233359
2021-01-01,0.6383129036281622
2021-04-01,0.6349299769834653
2021-07-01,0.6332936414950274
2021-10-01,0.6273878597479507
2022-01-01,0.6215714853834
2022-04-01,0.614888706793244
2022-07-01,0.6171779044289083
2022-10-01,0.6187348908436507
2023-01-01,0.6149482824411447
2023-04-01,0.6170687991561687
2023-07-01,0.6171229620372155
2023-10-01,0.6124274079490835
2024-01-01,0.6140232370921709
2024-04-01,0.613961513344669
2024-07-01,0.6158265961555474
2024-10-01,0.6128605369265657
2025-01-01,0.611843839386152
2025-04-01,0.608224188473227
2025-07-01,0.6051701252498141
2025-10-01,0.6035743112680664
2026-01-01,0.6031271047712938
2026-04-01,0.5968410041291143