Quarter	US Dollars, monthly level
1960-01-01	872620017.4524001
1960-04-01	924714691.6865890
1960-07-01	915048684.4564160
1960-10-01	961369170.0555240
1961-01-01	969622774.3968130
1961-04-01	988744841.5646430
1961-07-01	1072926802.5492500
1961-10-01	1179252882.0811600
1962-01-01	1127233532.7284200
1962-04-01	1150254860.3906400
1962-07-01	1163142870.0308700
1962-10-01	1264373863.8084102
1963-01-01	1183350023.6670000
1963-04-01	1235967291.9280700
1963-07-01	1295244388.2129002
1963-10-01	1367272540.3152600
1964-01-01	1327609078.2561600
1964-04-01	1462400000.0000000
1964-07-01	1550400000.0000000
1964-10-01	1624000000.0000000
1965-01-01	1675200000.0000000
1965-04-01	1787200000.0000000
1965-07-01	1812330894.4781500
1965-10-01	1924800000.0000000
1966-01-01	1888314215.4854600
1966-04-01	2035208628.9002802
1966-07-01	2000794118.6058402
1966-10-01	2120749897.1636398
1967-01-01	2122978078.0249100
1967-04-01	2193094792.9206300
1967-07-01	2071935062.2622898
1967-10-01	2331528480.3237500
1968-01-01	2372729936.2629004
1968-04-01	2500526623.6314497
1968-07-01	2502980695.8082700
1968-10-01	2835752508.9512800
1969-01-01	2821933895.0938997
1969-04-01	3102996535.2262597
1969-07-01	2933554357.4577400
1969-10-01	2825863347.4998600
1970-01-01	2962080914.8126297
1970-04-01	3371609910.6149800
1970-07-01	3330254782.8240300
1970-10-01	3497657794.5547400
1971-01-01	3464761021.3582700
1971-04-01	3684149439.1139200
1971-07-01	3838204741.9774700
1971-10-01	4163845855.5437994
1972-01-01	4328876446.3673800
1972-04-01	4660833088.1368010
1972-07-01	4444482681.4873400
1972-10-01	5111214980.5397410
1973-01-01	4191039890.0537800
1973-04-01	5369979532.5520400
1973-07-01	6068309431.2763000
1973-10-01	6644527694.0397810
1974-01-01	6244568114.7937800
1974-04-01	7256514038.3187200
1974-07-01	8211221073.6206000
1974-10-01	8513732694.9755890
1975-01-01	8063030542.4712190
1975-04-01	8621130354.9697590
1975-07-01	8712572809.7618620
1975-10-01	9423567745.6843000
1976-01-01	8057257803.8662000
1976-04-01	8852140348.8567600
1976-07-01	9446590512.9802200
1976-10-01	10954519655.1323990
1977-01-01	9807769159.6798700
1977-04-01	11475821403.1611000
1977-07-01	10927239839.6402000
1977-10-01	13094822359.4756000
1978-01-01	10786819059.3278000
1978-04-01	13650923588.4179000
1978-07-01	12727599573.9248000
1978-10-01	18940108183.2076000
1979-01-01	15236903097.6579000
1979-04-01	17246284936.5643000
1979-07-01	17572204790.6941030
1979-10-01	22148772951.3177000
1980-01-01	18524978784.3269000
1980-04-01	19616838798.0139000
1980-07-01	18531652330.1703000
1980-10-01	21087000433.7935000
1981-01-01	16048829016.5704020
1981-04-01	18995318506.5006000
1981-07-01	18599671716.2879000
1981-10-01	21599827923.6559030
1982-01-01	19154096996.9115000
1982-04-01	19407386978.1754000
1982-07-01	16754960449.9245000
1982-10-01	18191616174.4523000
1983-01-01	17609934240.0009000
1983-04-01	18315486471.0568000
1983-07-01	16681460671.1943020
1983-10-01	20040913763.2755000
1984-01-01	18453060237.2076000
1984-04-01	17141325378.0791000
1984-07-01	17975771379.4533000
1984-10-01	19727847398.8640000
1985-01-01	17066508606.6229000
1985-04-01	18096408480.2688980
1985-07-01	19200506176.4626000
1985-10-01	24653316369.1995000
1986-01-01	22587294681.7898000
1986-04-01	23830039003.7730000
1986-07-01	24100540550.1005020
1986-10-01	27278356676.8901000
1987-01-01	26290451989.1026000
1987-04-01	27294438062.3860000
1987-07-01	28856753909.5094000
1987-10-01	33765844606.6374000
1988-01-01	28767916432.8730000
1988-04-01	34571117021.4221000
1988-07-01	29175596860.3254970
1988-10-01	35945234920.9094000
1989-01-01	31541681958.7474000
1989-04-01	35980618383.4398000
1989-07-01	33481665391.4552000
1989-10-01	39625421130.2867050
1990-01-01	37542802931.8732000
1990-04-01	43242748466.8454000
1990-07-01	40523488487.2148000
1990-10-01	49077170019.3708950
1991-01-01	43407989774.7747000
1991-04-01	41980537079.8705000
1991-07-01	37344996454.7250000
1991-10-01	46724727027.7855000
1992-01-01	43160954028.7522000
1992-04-01	45498424299.6602000
1992-07-01	45530186116.2344000
1992-10-01	44050343851.9804000
1993-01-01	39447746227.3545000
1993-04-01	44616468349.8235000
1993-07-01	39655046065.0381000
1993-10-01	45570383746.4280000
1994-01-01	43189733785.5613000
1994-04-01	47827976807.4981000
1994-07-01	46625475608.7600000
1994-10-01	53610618783.3430000
1995-01-01	50771023252.7704000
1995-04-01	52182567707.8777000
1995-07-01	51079547132.9856000
1995-10-01	58508643331.2984000
1996-01-01	59199024158.8448000
1996-04-01	63317292758.8284000
1996-07-01	59732481972.5010000
1996-10-01	67164976576.1145900
1997-01-01	57653112318.6279000
1997-04-01	62187276169.3335000
1997-07-01	56745058953.8408000
1997-10-01	64485418255.0862050
1998-01-01	58828356175.3776000
1998-04-01	62816393026.6656000
1998-07-01	57993918759.8950040
1998-10-01	65103907421.4377000
1999-01-01	57508037653.6979000
1999-04-01	58162474700.8463060
1999-07-01	55576878757.2217000
1999-10-01	64091340460.5826000
2000-01-01	61079480205.8275000
2000-04-01	59927650777.1830000
2000-07-01	57240484313.2320000
2000-10-01	61763268818.2240000
2001-01-01	63648243017.2838000
2001-04-01	61311881033.9623000
2001-07-01	56113022424.2628000
2001-10-01	63495842900.9694000
2002-01-01	57462176371.6281000
2002-04-01	62539123192.8376000
2002-07-01	63043794915.5756000
2002-10-01	71452751993.6219000
2003-01-01	69953480588.5342100
2003-04-01	73317141936.3723900
2003-07-01	70062018715.7347000
2003-10-01	86465913974.2499000
2004-01-01	83349114509.5487000
2004-04-01	88226674485.0599000
2004-07-01	85258753036.0033000
2004-10-01	96907362155.0571000
2005-01-01	91916764397.7352000
2005-04-01	97411390711.5246000
2005-07-01	89591242984.9955000
2005-10-01	93858177421.1851000
2006-01-01	95556264508.5503000
2006-04-01	105414823067.2280000
2006-07-01	101135012938.4890000
2006-10-01	115259114197.8580000
2007-01-01	117309682146.9050000
2007-04-01	125780056453.2090000
2007-07-01	120683136036.0780000
2007-10-01	136488008084.5939800
2008-01-01	141050537858.2200000
2008-04-01	152327531375.2540000
2008-07-01	135892003109.6550100
2008-10-01	113906071106.6870000
2009-01-01	92390684416.2679000
2009-04-01	99333675786.9169900
2009-07-01	102186753974.6560000
2009-10-01	112731996424.5740000
2010-01-01	105595781483.2020000
2010-04-01	109003043596.6480000
2010-07-01	109068650871.3530000
2010-10-01	123405264221.4630000
2011-01-01	123225025642.5550000
2011-04-01	140005905479.9220000
2011-07-01	130701429406.6630100
2011-10-01	129256013251.6380000
2012-01-01	125105582011.9090000
2012-04-01	128456258130.8620100
2012-07-01	118800967346.3320000
2012-10-01	129356755114.8700000
2013-01-01	125137446316.9870000
2013-04-01	130563503338.5400000
2013-07-01	126098550188.4800100
2013-10-01	136420478407.3650000
2014-01-01	132133833288.7139900
2014-04-01	138744132901.5879800
2014-07-01	128975020047.8060000
2014-10-01	129736621035.4640000
2015-01-01	111675074331.4110000
2015-04-01	118383054448.5040000
2015-07-01	111130833160.1850100
2015-10-01	116093008461.6470000
2016-01-01	109485768324.2890000
2016-04-01	121671821538.7400000
2016-07-01	112970560563.6830000
2016-10-01	117384391192.3740000
2017-01-01	115979496895.6570000
2017-04-01	125879259952.9610000
2017-07-01	126179165987.6600000
2017-10-01	138205942570.9050000
2018-01-01	138208670569.3010000
2018-04-01	141929739858.8030000