Quarter	US Dollars, monthly level
1960-01-01	2405677652.7793803
1960-04-01	2551262045.2845097
1960-07-01	2490258558.2633300
1960-10-01	2794277276.3774500
1961-01-01	2510235471.7091200
1961-04-01	2802011083.4895800
1961-07-01	2720654060.0648800
1961-10-01	3017149375.6083900
1962-01-01	3014025225.4656300
1962-04-01	3067969906.6912300
1962-07-01	3006194783.9002700
1962-10-01	3288086386.7544600
1963-01-01	3040259159.9419200
1963-04-01	3341163314.5723100
1963-07-01	3364138657.5019603
1963-10-01	3369723235.7547400
1964-01-01	3311743906.4584900
1964-04-01	3582583919.3830400
1964-07-01	3719436628.6938000
1964-10-01	4181352304.3955000
1965-01-01	4095606658.7284400
1965-04-01	4375956141.7883700
1965-07-01	4414265139.6250500
1965-10-01	4749939642.9883190
1966-01-01	4517160984.3278600
1966-04-01	4547308405.3926110
1966-07-01	4415552456.8393110
1966-10-01	4696187160.1552800
1967-01-01	4138067915.6614103
1967-04-01	4391771253.0331600
1967-07-01	4222847356.4260100
1967-10-01	4854594324.9491300
1968-01-01	4749538612.2353710
1968-04-01	4866224968.8992300
1968-07-01	5131113998.3193600
1968-10-01	5586940178.8067600
1969-01-01	5686184992.6507800
1969-04-01	6144685206.5533905
1969-07-01	6167502667.5805500
1969-10-01	7020753017.0380300
1970-01-01	6994274530.9233090
1970-04-01	7649178367.7735200
1970-07-01	7319215117.7199500
1970-10-01	8101177105.8711400
1971-01-01	8118017875.1767290
1971-04-01	8554871162.2038400
1971-07-01	8533283049.0301200
1971-10-01	9350628770.0211600
1972-01-01	9606798727.7088300
1972-04-01	10300431028.3316000
1972-07-01	9600788144.6540890
1972-10-01	10863008335.9351000
1973-01-01	11920452617.9287000
1973-04-01	13416800224.2754000
1973-07-01	13995308032.9170000
1973-10-01	15445808697.2434000
1974-01-01	15266550722.6783000
1974-04-01	18045642865.7018000
1974-07-01	17524848184.1863020
1974-10-01	18802176153.0523000
1975-01-01	18022407147.0332000
1975-04-01	19749594785.4888000
1975-07-01	17530905899.8668000
1975-10-01	19608520310.6946030
1976-01-01	20190536599.5804020
1976-04-01	21617953232.4443000
1976-07-01	21842187761.7129000
1976-10-01	24739053990.1232000
1977-01-01	24092394481.6263000
1977-04-01	24782181914.3982000
1977-07-01	24856428352.7118000
1977-10-01	27672358618.4151000
1978-01-01	28178356994.8103000
1978-04-01	29730975900.1348000
1978-07-01	29190813902.1272000
1978-10-01	34604830907.0548900
1979-01-01	35823147585.1660000
1979-04-01	37811153495.6546000
1979-07-01	40134592159.5977000
1979-10-01	45933937953.1721950
1980-01-01	48519077618.2782060
1980-04-01	47455334659.8131940
1980-07-01	45845271903.1532000
1980-10-01	46102877749.4588000
1981-01-01	43780105853.2300950
1981-04-01	39795319833.0771000
1981-07-01	37696546643.0949900
1981-10-01	42613787176.1310960
1982-01-01	41120370415.6306000
1982-04-01	39958141429.5725000
1982-07-01	36145705684.8101040
1982-10-01	38098959483.9535000
1983-01-01	38907533279.7940000
1983-04-01	38591967489.2704000
1983-07-01	35976261576.8765000
1983-10-01	39407806279.3332000
1984-01-01	40256513503.5100000
1984-04-01	39303311784.1721040
1984-07-01	36253222730.8008040
1984-10-01	37046439415.4370000
1985-01-01	36919186666.3937000
1985-04-01	37428605986.9764000
1985-07-01	39747468598.5815000
1985-10-01	44446323795.7635960
1986-01-01	45903691452.3482000
1986-04-01	47571654860.2971040
1986-07-01	46250751925.1046000
1986-10-01	51116106908.6320950
1987-01-01	54076386952.9764000
1987-04-01	56382336140.0398940
1987-07-01	54106475859.0692000
1987-10-01	63841135209.6160000
1988-01-01	61409934912.3016000
1988-04-01	62795573002.1092000
1988-07-01	57424535501.8488000
1988-10-01	68891922388.0597000
1989-01-01	64958173064.4463960
1989-04-01	67704919775.2188950
1989-07-01	62434599546.0216000
1989-10-01	74613983083.8819100
1990-01-01	78092076709.2500900
1990-04-01	78018747512.0672000
1990-07-01	85210065645.7889000
1990-10-01	105204684585.6650100
1991-01-01	103649918076.6970000
1991-04-01	94264297546.7200000
1991-07-01	90925626359.5526900
1991-10-01	100366067753.8980000
1992-01-01	101924102241.6170000
1992-04-01	98148911788.3912000
1992-07-01	103567508706.0430000
1992-10-01	104794186732.3450000
1993-01-01	86147281103.4539000
1993-04-01	87765166738.7677000
1993-07-01	83289980646.5714000
1993-10-01	88754489094.9070000
1994-01-01	86232569655.4924000
1994-04-01	93226863558.8631000
1994-07-01	97682991165.9269000
1994-10-01	108029324825.0840000
1995-01-01	116561132578.7850000
1995-04-01	125268656173.9009900
1995-07-01	116493737469.5120000
1995-10-01	125985030981.1539900
1996-01-01	120733112869.5950000
1996-04-01	114772612614.4950100
1996-07-01	113889840279.0640100
1996-10-01	120614585680.4970000
1997-01-01	109968050544.3759900
1997-04-01	111940698736.7930000
1997-07-01	105365825383.2540100
1997-10-01	116155242526.0840000
1998-01-01	112208057562.6790000
1998-04-01	116027134069.8750000
1998-07-01	113117770364.6990000
1998-10-01	126893268130.6910000
1999-01-01	116252626250.8380100
1999-04-01	117114024782.0430000
1999-07-01	115874965000.3080000
1999-10-01	124435087533.1870000
2000-01-01	122699783838.1570000
2000-04-01	122018544949.0760000
2000-07-01	120094740566.7660000
2000-10-01	130849796910.8169900
2001-01-01	126911279835.7609900
2001-04-01	121554920004.4160000
2001-07-01	116857944556.1590000
2001-10-01	120947461018.0260000
2002-01-01	108156686603.3210000
2002-04-01	120870090202.9610000
2002-07-01	125163513060.9050000
2002-10-01	136499513863.9000100
2003-01-01	143494354940.0870000
2003-04-01	150834924387.4000000
2003-07-01	143947106375.8030000
2003-10-01	166767658253.1219800
2004-01-01	169318418052.4680000
2004-04-01	170498227421.4409800
2004-07-01	175169426269.5090000
2004-10-01	201088149152.7890000
2005-01-01	185297966580.1930000
2005-04-01	195466132222.7270000
2005-07-01	189751534374.7259800
2005-10-01	204919605884.6100200
2006-01-01	207775909263.4000000
2006-04-01	222645371069.0330000
2006-07-01	228420628983.8100000
2006-10-01	248983462177.9540000
2007-01-01	248616569095.5160200
2007-04-01	256537219462.5200000
2007-07-01	260905178049.9190000
2007-10-01	289948116667.0110000
2008-01-01	297609320632.0920400
2008-04-01	316578564578.8370400
2008-07-01	310334447329.9740000
2008-10-01	259339752991.0129700
2009-01-01	220922320853.0220000
2009-04-01	214766413085.2900000
2009-07-01	236591370907.5560000
2009-10-01	252862356799.2660000
2010-01-01	250294090320.5400000
2010-04-01	252974235319.0330000
2010-07-01	261563931858.2340000
2010-10-01	289526351866.0920000
2011-01-01	302576024932.0030000
2011-04-01	325516774354.3410000
2011-07-01	319013680071.7190000
2011-10-01	307298760866.8390000
2012-01-01	299066727348.5940000
2012-04-01	287900065666.3900000
2012-07-01	278356583866.4000000
2012-10-01	290517355030.8659700
2013-01-01	291182526958.0100000
2013-04-01	292499453087.1700400
2013-07-01	292598123730.3080000
2013-10-01	304725861785.3380000
2014-01-01	312536409391.4810000
2014-04-01	309004431062.0940000
2014-07-01	299363765163.1369600
2014-10-01	286148500124.7010000
2015-01-01	263877088343.4700000
2015-04-01	261476321397.2670000
2015-07-01	264253257332.6549700
2015-10-01	261654911924.8950000
2016-01-01	259475952030.0180000
2016-04-01	267394167295.4830000
2016-07-01	262397445010.2679700
2016-10-01	265481027162.0010000
2017-01-01	276127827329.4120000
2017-04-01	282110824040.7500000
2017-07-01	297536874607.5660000
2017-10-01	311031372423.6480000
2018-01-01	328791490761.7680000
2018-04-01	324945413805.1010000