Quarter	US Dollars, sum over component sub-periods
1970-01-01	182681033.579164000
1970-04-01	81691618.130040390
1970-07-01	-124177628.679026010
1970-10-01	160096438.908846020
1971-01-01	492466347.187162000
1971-04-01	304747796.528221000
1971-07-01	1405580839.201540000
1971-10-01	1577035492.853210000
1972-01-01	496378597.606726000
1972-04-01	-119564483.768643990
1972-07-01	-1562138139.297590000
1972-10-01	-468095597.036428000
1973-01-01	174044869.158799000
1973-04-01	961532736.647616000
1973-07-01	-629486538.929297000
1973-10-01	71321514.165533000
1974-01-01	-75245684.090825510
1974-04-01	278103603.988481000
1974-07-01	444319373.074927000
1974-10-01	-389098777.072531000
1975-01-01	339911135.067344000
1975-04-01	-952617660.091857100
1975-07-01	-362144227.328263000
1975-10-01	-443303343.237626000
1976-01-01	355722289.313402000
1976-04-01	-639139506.596819000
1976-07-01	-107701487.573857000
1976-10-01	-1016371733.294079900
1977-01-01	5478203402.757890000
1977-04-01	1990679920.146679900
1977-07-01	5599291132.264830000
1977-10-01	3637311453.773550000
1978-01-01	-88729749.926141100
1978-04-01	-3718530080.079210300
1978-07-01	104220742.035968990
1978-10-01	-616776822.794732000
1979-01-01	1924639868.809950000
1979-04-01	141463847.582791000
1979-07-01	339126451.931311960
1979-10-01	-250387598.203645020
1980-01-01	1029562971.534510100
1980-04-01	319594450.927117000
1980-07-01	-531106303.633891000
1980-10-01	-198027171.488123980
1981-01-01	735499416.918426000
1981-04-01	-3007665003.787350000
1981-07-01	-2142776257.099029800
1981-10-01	-231541676.285207000
1982-01-01	-20299581.396521500
1982-04-01	-1243985957.222090000
1982-07-01	496718875.043230950
1982-10-01	-1645979934.709859800
1983-01-01	-998730936.297650000
1983-04-01	220718304.010070000
1983-07-01	49820584.756505705
1983-10-01	-191008727.623686020
1984-01-01	-110472448.929408000
1984-04-01	-1196817247.414470200
1984-07-01	-361919273.904289000
1984-10-01	370893566.356643000
1985-01-01	-100274579.076013000
1985-04-01	762497525.064544000
1985-07-01	67359711.375419100
1985-10-01	1712029081.240120000
1986-01-01	835246736.299173000
1986-04-01	446344013.959864000
1986-07-01	3454517610.348830000
1986-10-01	-437569092.493443000
1987-01-01	2348048232.607150000
1987-04-01	7338923298.924010000
1987-07-01	435187297.027061000
1987-10-01	10075320894.904400000
1988-01-01	1172895108.960680000
1988-04-01	1161311235.273760000
1988-07-01	1686420849.343500100
1988-10-01	863012838.227560000
1989-01-01	-876938123.300999000
1989-04-01	-3465986900.019880300
1989-07-01	-571347361.551307000
1989-10-01	-3876871734.913300000
1990-01-01	-212078508.440332000
1990-04-01	128897024.108186000
1990-07-01	806175968.364558000
1990-10-01	-595225640.676416000
1991-01-01	4089748306.533230000
1991-04-01	1444089856.050650100
1991-07-01	-230834466.979226980
1991-10-01	-312324975.266141000
1992-01-01	555670404.787116000
1992-04-01	594221355.971393000
1992-07-01	-3152043804.127160000
1992-10-01	-618136147.081667000
1993-01-01	-683641599.760012000
1993-04-01	1147518169.793929800
1993-07-01	804797328.014740000
1993-10-01	-182009682.289555000
1994-01-01	418270226.948923000
1994-04-01	430033569.734728040
1994-07-01	313320178.237548000
1994-10-01	437071759.330152030
1995-01-01	-1308683115.502580000
1995-04-01	928767584.881454000
1995-07-01	535105009.007604960
1995-10-01	-460339305.579096000
1996-01-01	-2042860740.137770200
1996-04-01	358192834.230598030
1996-07-01	-1416140259.344770000
1996-10-01	2455389562.296560300
1997-01-01	-2378381493.943800000
1997-04-01	368277257.211284000
1997-07-01	545794358.896715000
1997-10-01	-2461762516.603920000
1998-01-01	-1643441817.901660000
1998-04-01	510695626.842112000
1998-07-01	517246058.282691000
1998-10-01	355253178.583299040
1999-01-01	-1367188597.373740200
1999-04-01	324546118.988020000
1999-07-01	-1215750625.595170000
1999-10-01	1230785816.491639900
2000-01-01	-3961446174.695100300
2000-04-01	837125609.129586000
2000-07-01	2258706309.997890000
2000-10-01	6233836399.136291000
2001-01-01	-3789080487.317320300
2001-04-01	52601016.868405400
2001-07-01	-716730903.455449900
2001-10-01	-36074593.018614106
2002-01-01	-753083045.373341900
2002-04-01	32178412.939622495
2002-07-01	1057218242.088190000
2002-10-01	-997997809.921419000
2003-01-01	-2606269410.711489700
2003-04-01	-1047203917.586849900
2003-07-01	2097633280.302729800
2003-10-01	-1004736827.485390000
2004-01-01	-965931668.804913000
2004-04-01	-1075415843.217540000
2004-07-01	-98188213.535481590
2004-10-01	2554857111.380049700
2005-01-01	-1007473108.392200000
2005-04-01	977720005.894064000
2005-07-01	670899157.437746000
2005-10-01	500074635.565661000
2006-01-01	-815024196.817836000
2006-04-01	-383462193.692567000
2006-07-01	721616971.075637000
2006-10-01	-260622720.557774000
2007-01-01	-1611044494.442200000
2007-04-01	133062505.909200010
2007-07-01	-1127869298.731320000
2007-10-01	5121998994.657090000
2008-01-01	-1841465904.495940200
2008-04-01	212861257.768013000
2008-07-01	-4021790987.384810000
2008-10-01	2527647167.432580000
2009-01-01	-2692039402.058760000
2009-04-01	2018033790.886860100
2009-07-01	11134983766.584702000
2009-10-01	-736541435.475705000
2010-01-01	2064861702.799710300
2010-04-01	4268474748.442119600
2010-07-01	1047446883.437020100
2010-10-01	1909190965.354430200
2011-01-01	3684332103.287990000
2011-04-01	3995387719.803980000
2011-07-01	-1543163082.812700000
2011-10-01	1818283042.230010000
2012-01-01	961466833.366016000
2012-04-01	4317583497.053040500
2012-07-01	3939593183.511719700
2012-10-01	2901994202.212819600
2013-01-01	4382538388.113661000
2013-04-01	1342054518.460430000
2013-07-01	1187966412.972360100
2013-10-01	798180470.885397000
2014-01-01	4484264795.449990000
2014-04-01	1388696090.336840000
2014-07-01	-1109598866.495230000
2014-10-01	6715771235.470870000
2015-01-01	19144536397.727303000
2015-04-01	1686790225.515859800
2015-07-01	8145515499.803221000
2015-10-01	3154501392.682630000
2016-01-01	3331448791.978570000
2016-04-01	4002861080.130700000
2016-07-01	3407753902.246060000
2016-10-01	-1493847528.228700000
2017-01-01	5024701152.151010500
2017-04-01	2251405833.637670000
2017-07-01	19629910.749339100
2017-10-01	1287206934.154510000
2018-01-01	4853321436.494060500
2018-04-01	2742954246.057620000