Table Data - Brave-Butters-Kelley Irregular Component of GDP

Title Brave-Butters-Kelley Irregular Component of GDP
Series ID BBKQIR
Source Indiana University: Indiana Business Research Center
Release Brave-Butters-Kelley Indexes
Seasonal Adjustment Seasonally Adjusted
Frequency Quarterly
Units Annualized Percent Change from Preceding Period
Date Range 1960-01-01 to 2026-04-01
Last Updated 2026-08-03 7:32 AM CDT
Notes The Brave-Butters-Kelley Indexes (BBKI) are the byproduct of research originally conducted by the Federal Reserve Bank of Chicago. Currently, the BBKI are maintained and produced by the Indiana Business Research Center at the Kelley School of Business at Indiana University. The BBK Coincident and Leading Indexes and Monthly GDP Growth for the U.S. are constructed from a collapsed dynamic factor analysis of a panel of 490 monthly measures of real economic activity and quarterly real GDP growth.

The irregular component of GDP is expressed in annualized real GDP growth equivalent units.

This quarterly series is aggregated from the monthly version of the series (BBKMIR), using the triangle average described in Brave, Butters, and Kelley (2019) to approximate quarterly annualized (log) percent changes from the monthly series.

For more details, see also:
Brave, Scott A., Ross Cole, and David Kelley, 2019, A 'big data' view of the U.S. economy: Introducing the Brave-Butters-Kelley Indexes, Chicago Fed Letter, Federal Reserve Bank of Chicago, No. 422. Crossref, https://doi.org/10.21033/cfl-2019-422
Brave, Scott A., R. Andrew Butters, and David Kelley, 2019, A new 'big data' index of U.S. economic activity, Economic Perspectives, Federal Reserve Bank of Chicago, Vol. 43, No. 1. Crossref, https://doi.org/10.21033/ep-2019-1
DATE VALUE
1960-01-01 3.508180871775872000
1960-04-01 -2.476731098788777000
1960-07-01 1.896040999601822000
1960-10-01 -3.904774189635438000
1961-01-01 2.688920957286562000
1961-04-01 0.648571570390242900
1961-07-01 0.923776265223742700
1961-10-01 0.568958930183295100
1962-01-01 1.566154621052302000
1962-04-01 -0.736996915049239800
1962-07-01 1.433947710933335400
1962-10-01 -1.940662289076788000
1963-01-01 0.175629185385366480
1963-04-01 -1.376121399188793000
1963-07-01 4.366752053337678000
1963-10-01 -2.261318643922307600
1964-01-01 3.192982074069540500
1964-04-01 -1.275475146913289400
1964-07-01 1.248068510302217300
1964-10-01 -3.378914892206379000
1965-01-01 2.563704837897728000
1965-04-01 -1.073093404538998400
1965-07-01 2.800962925415554600
1965-10-01 2.405333809211837000
1966-01-01 2.357403428307464700
1966-04-01 -3.193416488194380500
1966-07-01 -0.519259484621125700
1966-10-01 0.095557669453115280
1967-01-01 1.751175758815323200
1967-04-01 -1.878681481884057800
1967-07-01 0.204553030097323900
1967-10-01 -2.447929504367679400
1968-01-01 3.052568879771646000
1968-04-01 1.865359731188860000
1968-07-01 -0.736614956324107300
1968-10-01 -2.955689183554972000
1969-01-01 2.092574456210172200
1969-04-01 -2.319138492633443500
1969-07-01 -0.401102582058390060
1969-10-01 -3.477498784330094400
1970-01-01 0.145379054398866920
1970-04-01 -0.107849962366299200
1970-07-01 1.922700194889498800
1970-10-01 -3.825662089736693500
1971-01-01 5.673481903916335000
1971-04-01 -2.006804339910536000
1971-07-01 0.143419282552085860
1971-10-01 -3.938292768195187000
1972-01-01 0.345225598534593670
1972-04-01 3.411861295875279000
1972-07-01 -1.088683942461839000
1972-10-01 -1.014599175864448400
1973-01-01 2.660951560841366000
1973-04-01 0.798499125793674200
1973-07-01 -4.476499203896512000
1973-10-01 0.201686934464164580
1974-01-01 -4.345223646878703000
1974-04-01 -0.292761377834852700
1974-07-01 -4.278322161814398500
1974-10-01 2.202376218079632700
1975-01-01 1.787903171427342100
1975-04-01 2.619142023174662300
1975-07-01 1.083133434779139500
1975-10-01 0.349691849676074530
1976-01-01 2.288978108428587600
1976-04-01 -1.519801522327983500
1976-07-01 -1.771647616994131000
1976-10-01 -1.356665750969118500
1977-01-01 -0.921551938160732300
1977-04-01 1.112384773652802700
1977-07-01 2.546637274786675000
1977-10-01 -3.932934862735841400
1978-01-01 -1.919862766468133600
1978-04-01 6.677893981718100000
1978-07-01 -0.392943403673715300
1978-10-01 0.568768526197208900
1979-01-01 -1.807711250519939700
1979-04-01 -1.814413116287958600
1979-07-01 1.098506045648533600
1979-10-01 -0.429496367119569230
1980-01-01 0.619325713095992000
1980-04-01 -2.204447969317634000
1980-07-01 -0.640871230897699600
1980-10-01 0.451504194323982700
1981-01-01 5.015302997010607000
1981-04-01 -4.762667541195167000
1981-07-01 3.283297168070015400
1981-10-01 -1.742475217594633600
1982-01-01 -4.540735124282460000
1982-04-01 1.632924597052226600
1982-07-01 -1.388009549681045600
1982-10-01 0.279232899245962300
1983-01-01 0.484804857233488540
1983-04-01 2.112621397472082700
1983-07-01 0.175555541212318780
1983-10-01 0.933935421122433800
1984-01-01 0.577265891457332800
1984-04-01 1.437842795828650600
1984-07-01 0.166283690314313280
1984-10-01 -0.135868470134677500
1985-01-01 0.676810444556170800
1985-04-01 0.343627683046951960
1985-07-01 3.068557268362003000
1985-10-01 -0.483580610870957660
1986-01-01 0.427768647307869730
1986-04-01 -0.335380457747851300
1986-07-01 0.683475391043259500
1986-10-01 -0.942494063550214900
1987-01-01 -0.594228763658963700
1987-04-01 0.188562547059188980
1987-07-01 -1.239317589207494000
1987-10-01 2.028492668370627700
1988-01-01 -1.604872439483409700
1988-04-01 1.063303464050049600
1988-07-01 -0.976762429406166400
1988-10-01 1.196506064710902500
1989-01-01 0.648234308846188800
1989-04-01 0.776124709416908600
1989-07-01 1.421377257734037100
1989-10-01 -1.401893932758116400
1990-01-01 1.062821057110990200
1990-04-01 -0.168456891027182860
1990-07-01 -0.588176008961848900
1990-10-01 -2.100756635044162000
1991-01-01 0.128123180934630900
1991-04-01 1.166473013957110200
1991-07-01 -1.213030374417923600
1991-10-01 -0.408220456828063240
1992-01-01 2.506670515958407700
1992-04-01 -0.012772200229645515
1992-07-01 0.852994914371888300
1992-10-01 0.835194758538995000
1993-01-01 -2.551901351421374000
1993-04-01 -0.419249657110863600
1993-07-01 -0.952397907905168200
1993-10-01 0.819477026639853200
1994-01-01 -0.281598924990969500
1994-04-01 0.499793277262913400
1994-07-01 -1.790883756887474300
1994-10-01 -0.134826499789550360
1995-01-01 -1.876703187026121300
1995-04-01 -0.775323829610142700
1995-07-01 0.193368353723124360
1995-10-01 -0.678324605229686000
1996-01-01 0.285184935920226700
1996-04-01 1.899377942804823900
1996-07-01 -0.296904506202275900
1996-10-01 0.325528130992035260
1997-01-01 -1.681610167242925000
1997-04-01 1.984514571184796700
1997-07-01 -0.171353025374158200
1997-10-01 -1.303451141687023400
1998-01-01 -0.004652695007839464
1998-04-01 0.141194561248418670
1998-07-01 1.517796141389747000
1998-10-01 2.249669177535924000
1999-01-01 0.171564052204465830
1999-04-01 -0.378516634250068150
1999-07-01 1.259799979636631300
1999-10-01 1.793188571750471600
2000-01-01 -2.491130203926619000
2000-04-01 3.333697807659335300
2000-07-01 -2.106302634520928600
2000-10-01 0.579864032181104000
2001-01-01 -1.612842790153946400
2001-04-01 2.951823926262441000
2001-07-01 -1.069396259324676000
2001-10-01 1.497681823986475300
2002-01-01 1.394022189549224600
2002-04-01 -0.806707214338895400
2002-07-01 -0.219148751310201800
2002-10-01 -0.847675676139508700
2003-01-01 0.006452663205606558
2003-04-01 1.646168884898243000
2003-07-01 2.680174082591265400
2003-10-01 0.177877255762260320
2004-01-01 -1.698720203068020000
2004-04-01 -1.043945797931854300
2004-07-01 -0.169865890449087200
2004-10-01 -0.277684386192250050
2005-01-01 0.121666074364660100
2005-04-01 -1.480459749752771000
2005-07-01 0.185078693294545130
2005-10-01 -2.036488482202362300
2006-01-01 1.211378093563096200
2006-04-01 -1.898024667165920700
2006-07-01 -1.686581899794387300
2006-10-01 1.044994226104940700
2007-01-01 -1.719874557244476700
2007-04-01 -0.324145417094087500
2007-07-01 0.395026548367367670
2007-10-01 0.763310525885976000
2008-01-01 -1.858374425733906500
2008-04-01 2.712707990166103800
2008-07-01 -0.134058320948217350
2008-10-01 -2.611665196248365500
2009-01-01 2.863380957482964300
2009-04-01 2.560901224915908000
2009-07-01 -0.231791300665942300
2009-10-01 1.886533074776333800
2010-01-01 -0.751199222922306900
2010-04-01 -0.093021028606325760
2010-07-01 0.485319151100053900
2010-10-01 -0.302780365309634400
2011-01-01 -3.914183351429460000
2011-04-01 0.376399214076786340
2011-07-01 -2.321159018368300000
2011-10-01 1.945807383456476900
2012-01-01 -0.351904987425052900
2012-04-01 -0.869206953589531600
2012-07-01 -0.790833669034606700
2012-10-01 -1.558952745557847800
2013-01-01 1.066029881619151600
2013-04-01 -1.300387641419289200
2013-07-01 0.651927772422486200
2013-10-01 0.482919456979891970
2014-01-01 -3.625744038090443000
2014-04-01 1.274747884392049400
2014-07-01 1.046005374394297900
2014-10-01 -1.419452574947081000
2015-01-01 1.096009385391296400
2015-04-01 0.102518434065906690
2015-07-01 -0.907574007690072100
2015-10-01 -0.681456458045019900
2016-01-01 0.746135256919811500
2016-04-01 -0.672722857854223100
2016-07-01 0.654253930720238900
2016-10-01 -0.099322054771357850
2017-01-01 -1.268614974891670900
2017-04-01 -1.208176364905244800
2017-07-01 0.194410640757147450
2017-10-01 0.134157439039046100
2018-01-01 -0.532310984518090400
2018-04-01 -1.638819237318136700
2018-07-01 -0.856171107431742600
2018-10-01 -2.234923852056960800
2019-01-01 0.363071711261863700
2019-04-01 0.755214079081361400
2019-07-01 2.223926410146814400
2019-10-01 1.675497437784074300
2020-01-01 -3.186986241970083000
2020-04-01 -17.474416622976563000
2020-07-01 18.693229784732456000
2020-10-01 -2.452526249838168000
2021-01-01 0.526729849663733500
2021-04-01 0.608473420556517900
2021-07-01 -1.452485475327898600
2021-10-01 1.878958992707325400
2022-01-01 -4.286295785048201000
2022-04-01 -1.699668399903826000
2022-07-01 1.345132145115715200
2022-10-01 1.551829127845945300
2023-01-01 1.304350661746550000
2023-04-01 0.755291573670262500
2023-07-01 2.141835669835076200
2023-10-01 1.390123327359387800
2024-01-01 -0.552586081471274200
2024-04-01 1.444988588442866000
2024-07-01 1.487396631108060400
2024-10-01 0.085017603828203280
2025-01-01 -3.141917761433324000
2025-04-01 2.402620143067292000
2025-07-01 2.433333271723383000
2025-10-01 -0.470113026425564630
2026-01-01 -0.011393651849931234
2026-04-01 -1.051418647546196600

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