Quarter	US Dollars, monthly level
1960-01-01	16081427.594006100
1960-04-01	-52767975.652613096
1960-07-01	-172769643.924696000
1960-10-01	-62376523.134769600
1961-01-01	-62946049.209339490
1961-04-01	83932644.076341110
1961-07-01	96855928.246947700
1961-10-01	190771343.240318000
1962-01-01	107197756.263332000
1962-04-01	78876534.847978010
1962-07-01	-91981770.749800410
1962-10-01	44299200.078770300
1963-01-01	52774122.265313596
1963-04-01	34710680.261530094
1963-07-01	83303217.357901100
1963-10-01	202674936.945638000
1964-01-01	145656824.033465000
1964-04-01	83253017.921974900
1964-07-01	-73040794.636424400
1964-10-01	-16366442.039427200
1965-01-01	-40709664.251250000
1965-04-01	-83178376.756694700
1965-07-01	-134401749.134851000
1965-10-01	-41626802.289481000
1966-01-01	-65078094.141078405
1966-04-01	65848141.883540600
1966-07-01	-51780366.413127700
1966-10-01	48480291.131171300
1967-01-01	10240513.942078399
1967-04-01	41657305.839801600
1967-07-01	-73464324.564859000
1967-10-01	68693846.445836000
1968-01-01	-136436197.140406000
1968-04-01	-26126274.704385000
1968-07-01	-130059013.324459980
1968-10-01	-3882546.203246980
1969-01-01	55544955.727166906
1969-04-01	56095327.340773100
1969-07-01	65448611.071121804
1969-10-01	66781886.692722910
1970-01-01	139769933.029919980
1970-04-01	105754418.801719000
1970-07-01	23308580.397986900
1970-10-01	54977979.283465500
1971-01-01	81461554.333821600
1971-04-01	192895554.799119980
1971-07-01	181857390.189024000
1971-10-01	166993012.261157000
1972-01-01	275240100.839734000
1972-04-01	518680501.582449100
1972-07-01	523220943.688754000
1972-10-01	621468699.017466100
1973-01-01	856783776.095776100
1973-04-01	834872505.055096000
1973-07-01	594305876.719016100
1973-10-01	519380169.806053940
1974-01-01	260012725.128601000
1974-04-01	37307968.211623700
1974-07-01	-222989204.744791000
1974-10-01	44419192.880660000
1975-01-01	469663663.849199000
1975-04-01	723621673.202022000
1975-07-01	545535414.641421900
1975-10-01	444031302.092936000
1976-01-01	323367194.683593000
1976-04-01	680087006.401987100
1976-07-01	706803208.062579000
1976-10-01	418263486.728044000
1977-01-01	84421891.664491600
1977-04-01	255350342.305199000
1977-07-01	279193977.650157030
1977-10-01	514268107.579093040
1978-01-01	137845566.499770020
1978-04-01	312826833.972535000
1978-07-01	-152697481.049062000
1978-10-01	-1038017.478321550
1979-01-01	228342644.705504000
1979-04-01	468596548.100563000
1979-07-01	476728190.252256000
1979-10-01	977935768.949452000
1980-01-01	526573381.728823960
1980-04-01	870798741.927469000
1980-07-01	-142171645.746119020
1980-10-01	262956834.086957040
1981-01-01	85246936.143471200
1981-04-01	-18459289.147380600
1981-07-01	-1014220212.688069900
1981-10-01	-1107285623.135400000
1982-01-01	-1029328332.054189900
1982-04-01	-701417469.868627000
1982-07-01	-458379933.091093960
1982-10-01	-74618869.751659500
1983-01-01	365757153.987135000
1983-04-01	961325271.251681000
1983-07-01	-113660401.779299990
1983-10-01	404555409.039020000
1984-01-01	82508613.103849700
1984-04-01	99052899.566478790
1984-07-01	262586568.055989000
1984-10-01	5070852.581262610
1985-01-01	-318880172.945050000
1985-04-01	627609541.836741000
1985-07-01	-352437240.859398960
1985-10-01	-368299762.210850000
1986-01-01	-79666644.306888400
1986-04-01	-461069077.498677970
1986-07-01	-777493062.054065000
1986-10-01	52947574.266284790
1987-01-01	-283309806.616777000
1987-04-01	239481473.091930000
1987-07-01	-423480915.914904000
1987-10-01	85018915.430302010
1988-01-01	472049110.121306000
1988-04-01	-29515727.524810400
1988-07-01	-338858635.526840000
1988-10-01	-203031680.224063000
1989-01-01	-1312231388.568420000
1989-04-01	-631624952.377299000
1989-07-01	-1104419783.096789800
1989-10-01	-710119065.745996000
1990-01-01	-411595106.122156000
1990-04-01	490126699.362915000
1990-07-01	251276750.084550020
1990-10-01	524663521.417928040
1991-01-01	441139128.280306000
1991-04-01	1492603573.013100000
1991-07-01	648447967.407249900
1991-10-01	563095738.246161000
1992-01-01	675173737.369973000
1992-04-01	1214065710.872140000
1992-07-01	-146139990.425533000
1992-10-01	397901347.842050000
1993-01-01	153863758.131019000
1993-04-01	370299316.080306000
1993-07-01	-183864125.769403000
1993-10-01	-97250789.477008800
1994-01-01	89136500.840031400
1994-04-01	270197534.763695000
1994-07-01	-1748652561.043670200
1994-10-01	-1093604455.246460200
1995-01-01	-1593721624.356580000
1995-04-01	-1172966951.125890000
1995-07-01	-971988978.531508000
1995-10-01	-555917553.055774000
1996-01-01	-56735603.245662100
1996-04-01	270115657.197563000
1996-07-01	-702735777.109092000
1996-10-01	-639732815.907601000
1997-01-01	462965603.598641000
1997-04-01	793411560.880289900
1997-07-01	-219755553.059109000
1997-10-01	29053112.233390898
1998-01-01	-1310287370.300530000
1998-04-01	-437152479.195858960
1998-07-01	-1652363235.690680000
1998-10-01	-1471460492.557070000
1999-01-01	-2012800021.411120000
1999-04-01	-2170435351.334980000
1999-07-01	-2681131061.812120000
1999-10-01	-2578051517.933650000
2000-01-01	-1598833474.410630000
2000-04-01	-1253052096.223830000
2000-07-01	-1033637810.980220000
2000-10-01	-71323765.539975900
2001-01-01	318978959.045742030
2001-04-01	1312675756.352240000
2001-07-01	850085439.726467000
2001-10-01	-17403601.975515000
2002-01-01	73066969.422284990
2002-04-01	-168045674.537766000
2002-07-01	-1748213164.620809800
2002-10-01	-2704018018.060690000
2003-01-01	-2408097085.295370000
2003-04-01	-3546381673.405210000
2003-07-01	-4136688025.390530000
2003-10-01	-4393289575.672660000
2004-01-01	-4051489182.020010000
2004-04-01	-3026594843.851960000
2004-07-01	-4857598865.046989000
2004-10-01	-5371246987.537600500
2005-01-01	-4497954411.358070000
2005-04-01	-2200752196.882940300
2005-07-01	-3393648967.820019700
2005-10-01	-2533467325.603790300
2006-01-01	-2993216447.038160300
2006-04-01	-2197219756.944520000
2006-07-01	-1390028585.841600000
2006-10-01	-2650368134.479570000
2007-01-01	-3266358138.506360000
2007-04-01	-2660463267.444800000
2007-07-01	-4135243184.379130000
2007-10-01	-6365860491.175650000
2008-01-01	-6992760988.141251000
2008-04-01	-1567434824.944420000
2008-07-01	1544981033.223700000
2008-10-01	2703713718.033540200
2009-01-01	3092372136.692460000
2009-04-01	676559564.613585000
2009-07-01	-2826341493.751650000
2009-10-01	-5611906473.928240000
2010-01-01	-2152549317.882200200
2010-04-01	7663456989.821620000
2010-07-01	6999945209.982730000
2010-10-01	6525759210.413040000
2011-01-01	5741213340.548090000
2011-04-01	12596475173.309700000
2011-07-01	10529839150.262999000
2011-10-01	7284495227.075500500
2012-01-01	327088111.900887970
2012-04-01	6812101451.547180000
2012-07-01	485092711.867016000
2012-10-01	-1693998539.902980000
2013-01-01	3482837814.355470000
2013-04-01	8191502445.749080000
2013-07-01	3239951374.963490000
2013-10-01	5333390544.764010000
2014-01-01	6111180056.540070000
2014-04-01	4181082837.406080200
2014-07-01	421731339.784678040
2014-10-01	1189609931.317190000
2015-01-01	504262512.327066960
2015-04-01	-3817546037.564110300
2015-07-01	-3761190751.618849800
2015-10-01	-5768777787.093810000
2016-01-01	-3578239158.113810000
2016-04-01	-1250697361.569090000
2016-07-01	-648190143.439627000
2016-10-01	8712138441.467150000
2017-01-01	8402561445.629590000
2017-04-01	3768323849.605720000
2017-07-01	-5314718046.931450000
2017-10-01	2820598457.983340300
2018-01-01	5830495391.207320000
2018-04-01	6841109860.550030000
2018-07-01	8397220598.516959000