Quarter	US Dollars, monthly level
1960-01-01	2733937761.3457600
1960-04-01	2757614122.4766400
1960-07-01	2771643706.0896897
1960-10-01	3230297052.7249403
1961-01-01	2976150388.8066500
1961-04-01	3225513637.4089203
1961-07-01	3156939125.5527600
1961-10-01	3335001416.7989000
1962-01-01	3165705066.3575700
1962-04-01	3307731510.2444496
1962-07-01	3255895002.1069700
1962-10-01	3527486435.7157803
1963-01-01	3225998465.5332300
1963-04-01	3640445197.3754100
1963-07-01	3678452342.2904600
1963-10-01	4087941618.8499200
1964-01-01	3921931491.0065603
1964-04-01	4079618226.8798704
1964-07-01	3896552658.6316004
1964-10-01	4437152680.6644110
1965-01-01	4370941560.1555605
1965-04-01	4366144580.9323400
1965-07-01	4302079395.7450800
1965-10-01	4906316256.7492490
1966-01-01	4721821999.7990200
1966-04-01	4888478382.2173500
1966-07-01	4979135733.7943800
1966-10-01	5576414910.5927600
1967-01-01	5225479341.7745700
1967-04-01	5508156554.7560300
1967-07-01	5166145434.8869095
1967-10-01	5927405785.2557500
1968-01-01	5835426945.8257410
1968-04-01	5729587463.3813500
1968-07-01	6172989385.9666700
1968-10-01	7207054641.9053800
1969-01-01	6378077253.9673300
1969-04-01	7122359861.5340400
1969-07-01	7174141239.9165390
1969-10-01	8346719162.4680805
1970-01-01	7796199704.9319800
1970-04-01	8579774610.8289510
1970-07-01	8493305548.6713500
1970-10-01	9499786699.1822200
1971-01-01	9130750032.1330900
1971-04-01	9459713304.3600200
1971-07-01	9900209757.2862910
1971-10-01	10662790329.4047000
1972-01-01	11014164146.4177990
1972-04-01	11531803536.2015000
1972-07-01	11046134213.8365000
1972-10-01	13128424914.1430000
1973-01-01	13884433354.7615000
1973-04-01	15948541844.4212000
1973-07-01	18145697105.1422000
1973-10-01	19441472218.2284000
1974-01-01	20170308158.3993000
1974-04-01	22842190363.3386000
1974-07-01	22020320142.5069000
1974-10-01	24306198817.1787000
1975-01-01	22548926305.1321000
1975-04-01	23669615281.1788000
1975-07-01	20779640209.9820000
1975-10-01	23171651354.4743000
1976-01-01	23541694537.2600980
1976-04-01	24590517321.3169000
1976-07-01	25179939835.6641000
1976-10-01	28797297754.9072000
1977-01-01	27807080855.4453000
1977-04-01	28798004910.8844030
1977-07-01	28305649743.6268000
1977-10-01	33125906725.0322040
1978-01-01	32599785375.7290000
1978-04-01	34664171394.6473000
1978-07-01	33955269175.2046970
1978-10-01	41102362448.6749040
1979-01-01	40040116106.0802000
1979-04-01	41516914922.0647000
1979-07-01	42040635307.5045000
1979-10-01	48238390219.0332000
1980-01-01	50040466555.1840000
1980-04-01	48384983584.8118000
1980-07-01	46682226182.4324000
1980-10-01	47710998568.5357000
1981-01-01	43686398434.8798000
1981-04-01	42673435580.9356000
1981-07-01	40615455864.8193050
1981-10-01	49001928116.7267000
1982-01-01	45872724660.7460000
1982-04-01	45525472515.7673950
1982-07-01	40843228708.8281000
1982-10-01	44182906626.5060040
1983-01-01	43855265116.7943000
1983-04-01	42699840048.2833000
1983-07-01	39121039686.7433000
1983-10-01	43761291458.6627000
1984-01-01	44455178821.2651000
1984-04-01	42472118739.7738950
1984-07-01	40392238368.6421000
1984-10-01	44218783779.3591000
1985-01-01	41099397162.5398000
1985-04-01	43441767842.6799000
1985-07-01	45921099260.3169000
1985-10-01	53589913568.4614940
1986-01-01	55511053268.3869000
1986-04-01	60091427863.4280000
1986-07-01	60358449867.3994000
1986-10-01	67297516013.8803940
1987-01-01	69142497907.0400000
1987-04-01	71918898404.6089000
1987-07-01	69270751522.4010000
1987-10-01	83829476986.2210000
1988-01-01	76450293282.4245000
1988-04-01	82722854288.7274000
1988-07-01	74413981029.9554900
1988-10-01	89810656096.8741000
1989-01-01	84298641652.2491000
1989-04-01	85455462680.1351000
1989-07-01	80226579550.1802000
1989-10-01	91314741587.9086000
1990-01-01	99954619292.6426100
1990-04-01	94615505273.8216000
1990-07-01	101117908497.5519900
1990-10-01	115327785504.9290000
1991-01-01	108300875939.1129900
1991-04-01	93542311543.4900000
1991-07-01	93808059562.2670000
1991-10-01	107134075436.9070000
1992-01-01	106610267861.9210000
1992-04-01	101723029672.3040000
1992-07-01	112194795698.1900000
1992-10-01	109754335520.2310000
1993-01-01	95179526240.6720000
1993-04-01	96903090723.6883000
1993-07-01	90028727680.9664900
1993-10-01	100284668924.9420000
1994-01-01	95159829892.1239000
1994-04-01	106714805187.2510000
1994-07-01	108037237986.5140000
1994-10-01	119534207178.0250000
1995-01-01	129910984131.0570000
1995-04-01	142275355869.5030000
1995-07-01	130776148719.5120100
1995-10-01	143644781639.7050200
1996-01-01	134726786840.9940000
1996-04-01	130498930293.7119900
1996-07-01	131952454367.5449800
1996-10-01	139844464700.4250000
1997-01-01	122942817204.1409900
1997-04-01	129402969143.0739900
1997-07-01	122831683653.9100000
1997-10-01	134831612126.1900000
1998-01-01	127656619771.8280000
1998-04-01	135001229357.1830100
1998-07-01	131115599568.3740000
1998-10-01	146286653586.9870000
1999-01-01	133446251986.9360000
1999-04-01	133696549046.7590000
1999-07-01	132308219265.6509900
1999-10-01	143658784423.6620200
2000-01-01	138863572421.0590000
2000-04-01	137340087043.1180000
2000-07-01	131947904497.6370100
2000-10-01	142357465239.2570200
2001-01-01	147708631708.0490000
2001-04-01	140870710117.6190200
2001-07-01	139632253744.1210000
2001-10-01	143609161501.1370200
2002-01-01	137369131957.7519800
2002-04-01	150037412937.1240000
2002-07-01	160122810844.3790000
2002-10-01	168705946857.2810000
2003-01-01	175517456119.5680200
2003-04-01	184726861119.2160000
2003-07-01	187201040280.4870000
2003-10-01	204620710127.9560000
2004-01-01	221018489379.3180000
2004-04-01	222682857517.0760000
2004-07-01	219713393119.8020000
2004-10-01	246418680051.4250200
2005-01-01	241204893842.4980000
2005-04-01	245886108274.4610000
2005-07-01	238628642436.8970000
2005-10-01	244172985360.1380000
2006-01-01	255569799476.8610000
2006-04-01	267439748578.2180000
2006-07-01	278213148406.8550000
2006-10-01	308294538135.0559700
2007-01-01	311441674628.0990000
2007-04-01	321099269699.2910000
2007-07-01	329545838431.0090000
2007-10-01	360263422957.4890000
2008-01-01	373642599415.8950000
2008-04-01	399304067693.7900000
2008-07-01	370369861241.0370000
2008-10-01	303705568789.7279700
2009-01-01	256869805373.3740000
2009-04-01	261330405643.4100000
2009-07-01	288233243876.8820000
2009-10-01	313323490449.0040000
2010-01-01	302290294841.5090300
2010-04-01	300000689801.2280000
2010-07-01	311624938319.9530000
2010-10-01	344691653820.7050000
2011-01-01	358128994375.4570300
2011-04-01	380444096700.8320300
2011-07-01	374544819290.0230000
2011-10-01	360231491888.3290000
2012-01-01	360390005081.0070000
2012-04-01	349813098586.3140000
2012-07-01	342313725777.9070000
2012-10-01	349593114524.6320000
2013-01-01	355896484593.8520000
2013-04-01	356656795569.0100000
2013-07-01	359239201388.6100000
2013-10-01	373020966427.8960000
2014-01-01	378253850470.3190000
2014-04-01	379509567787.6720000
2014-07-01	377497238592.2520000
2014-10-01	358696776188.5749500
2015-01-01	330068298012.5450000
2015-04-01	333361571386.4400000
2015-07-01	334013382492.8090000
2015-10-01	329120156522.3450000
2016-01-01	324282862341.5650000
2016-04-01	346996090618.3450300
2016-07-01	332400567761.5410000
2016-10-01	329808218755.0780000
2017-01-01	340504951252.1520400
2017-04-01	351237524194.2140000
2017-07-01	372577427968.5280000
2017-10-01	383588944727.7080000
2018-01-01	404134837710.9570300
2018-04-01	400036507012.6230500