Quarter	US Dollars, monthly level
1960-01-01	1393172268.9218700
1960-04-01	1520034246.5857200
1960-07-01	1331301369.8762500
1960-10-01	1418924438.3978100
1961-01-01	1294343434.3524400
1961-04-01	1489637826.9717800
1961-07-01	1368023255.8246000
1961-10-01	1538790607.9213300
1962-01-01	1403022589.8838900
1962-04-01	1562448568.9513200
1962-07-01	1437127414.8562200
1962-10-01	1450472684.0440900
1963-01-01	1312032609.8483498
1963-04-01	1574258803.8905100
1963-07-01	1528907526.7526798
1963-10-01	1664065325.1037800
1964-01-01	1531384780.5601099
1964-04-01	1893638538.7745600
1964-07-01	1687074199.3858001
1964-10-01	1829095826.1910400
1965-01-01	1708688588.0169700
1965-04-01	2063769725.5887300
1965-07-01	1961269845.2089700
1965-10-01	2273982537.8855996
1966-01-01	2049136395.3368201
1966-04-01	2471144292.4919900
1966-07-01	2265426225.9163600
1966-10-01	2560199937.1442500
1967-01-01	2305742227.3882300
1967-04-01	2750937500.9831900
1967-07-01	2439291752.6261997
1967-10-01	2581785975.3212600
1968-01-01	2588083827.3854600
1968-04-01	2968059182.9851403
1968-07-01	2688896618.7762203
1968-10-01	3227345468.1124600
1969-01-01	3016154984.1524000
1969-04-01	3514498598.9047700
1969-07-01	3092572148.7501397
1969-10-01	3497596560.4248700
1970-01-01	3109748710.0190100
1970-04-01	3670376896.2718797
1970-07-01	3273867057.7012000
1970-10-01	3306686723.3751597
1971-01-01	3400274950.4645300
1971-04-01	4051820934.8637404
1971-07-01	3706474893.3659100
1971-10-01	4310615896.2531100
1972-01-01	4210784646.0974300
1972-04-01	5074093117.4432600
1972-07-01	4427627670.4287300
1972-10-01	5136953488.4246690
1973-01-01	5271407511.3534700
1973-04-01	6054279000.9527690
1973-07-01	5391031147.2145405
1973-10-01	6609999509.4328800
1974-01-01	6973765226.5625600
1974-04-01	8385805212.6041590
1974-07-01	8033626348.1138400
1974-10-01	9048753207.7347100
1975-01-01	8328815328.7683910
1975-04-01	9113981929.3409700
1975-07-01	7894786652.7902900
1975-10-01	8798562553.7713600
1976-01-01	9176240542.4582400
1976-04-01	10245955284.8431020
1976-07-01	8955928522.2484590
1976-10-01	9655398051.5191400
1977-01-01	9702153460.0829600
1977-04-01	10925508442.4110000
1977-07-01	9311947587.5879000
1977-10-01	9904288440.7784100
1978-01-01	9633284667.9652790
1978-04-01	12094982605.0467010
1978-07-01	10194352895.8526000
1978-10-01	11958033874.0717010
1979-01-01	12531511440.2035000
1979-04-01	13633122002.2572000
1979-07-01	13203164203.5874000
1979-10-01	14329261910.1686000
1980-01-01	14628181472.7864990
1980-04-01	15330790118.8280010
1980-07-01	13598928096.5860000
1980-10-01	15658799346.5857010
1981-01-01	15859336012.8620000
1981-04-01	18219336338.6047000
1981-07-01	15858903153.5625000
1981-10-01	16361804184.7276000
1982-01-01	14568041959.3810000
1982-04-01	14650421162.6936000
1982-07-01	13188123704.2447010
1982-10-01	12619966333.8771000
1983-01-01	13777362422.4976000
1983-04-01	15510575935.1411000
1983-07-01	15030053702.8572000
1983-10-01	16946613813.4770010
1984-01-01	18108705525.6393000
1984-04-01	19455471516.8569000
1984-07-01	18146287780.9190980
1984-10-01	18005262297.0273000
1985-01-01	17856226026.6932000
1985-04-01	19924771603.9202000
1985-07-01	19035803346.5088000
1985-10-01	19566001658.9372000
1986-01-01	19721718091.8052020
1986-04-01	21405618755.3224000
1986-07-01	19692462039.9863000
1986-10-01	20163141209.1118000
1987-01-01	20761971633.3062970
1987-04-01	22181622651.2263000
1987-07-01	21034966494.1905000
1987-10-01	23693028896.9532000
1988-01-01	27762942015.3752000
1988-04-01	27298215532.5963000
1988-07-01	25035193496.7151000
1988-10-01	26474067024.3958000
1989-01-01	28316191740.3276000
1989-04-01	30535121274.2044000
1989-07-01	26592056202.1285000
1989-10-01	28714654797.5736000
1990-01-01	29728782880.5382000
1990-04-01	30633016048.4290000
1990-07-01	27184385800.7168000
1990-10-01	29142407033.1191980
1991-01-01	28265280579.9357000
1991-04-01	30397645652.0154000
1991-07-01	29089911676.0753970
1991-10-01	30451321640.2582000
1992-01-01	30383486614.7855000
1992-04-01	31699520978.9127000
1992-07-01	30012529125.1541000
1992-10-01	30361179191.9022000
1993-01-01	31661220014.7657000
1993-04-01	34377162376.6124000
1993-07-01	31906745448.2913000
1993-10-01	33763117134.6405030
1994-01-01	34067808172.0686040
1994-04-01	37757261837.4553000
1994-07-01	36660360495.6375000
1994-10-01	39877284467.8316040
1995-01-01	41021240410.1435000
1995-04-01	43300067108.3890000
1995-07-01	39253723721.4246000
1995-10-01	40740325312.7041000
1996-01-01	41944845040.8037950
1996-04-01	42930860568.4276000
1996-07-01	41389008998.2880000
1996-10-01	44289169548.2052000
1997-01-01	46589744903.0476000
1997-04-01	50741320394.5254060
1997-07-01	48658649427.9412000
1997-10-01	51002230050.8509000
1998-01-01	50674538179.3791960
1998-04-01	52423445938.4036000
1998-07-01	47079164494.2044000
1998-10-01	51062254531.4246000
1999-01-01	51161182679.7392000
1999-04-01	54739423899.9864960
1999-07-01	52292542060.8682000
1999-10-01	57579376991.5625000
2000-01-01	59629915273.4968950
2000-04-01	62512128218.3971000
2000-07-01	58135866625.9355000
2000-10-01	60097606108.4477000
2001-01-01	57249051977.7589000
2001-04-01	59292995679.5081000
2001-07-01	52681735956.7313000
2001-10-01	52460967122.0934000
2002-01-01	51630264120.4602000
2002-04-01	58415664224.5734940
2002-07-01	55265729716.6939000
2002-10-01	57036620743.6059000
2003-01-01	57299356579.7178040
2003-04-01	63254607655.2838000
2003-07-01	57301834612.7052000
2003-10-01	62512242328.3161000
2004-01-01	62775148481.5693050
2004-04-01	69118510729.3839000
2004-07-01	68401768240.8157960
2004-10-01	73594249917.8244000
2005-01-01	74072713807.8219000
2005-04-01	79991949285.5694000
2005-07-01	78078892006.0979000
2005-10-01	82301008985.0804000
2006-01-01	82918301720.7748100
2006-04-01	90751287608.0253900
2006-07-01	88398727609.4565000
2006-10-01	88083841382.8100000
2007-01-01	87098435239.6096000
2007-04-01	95409362222.5582000
2007-07-01	95916788084.4176000
2007-10-01	102038504058.4110000
2008-01-01	99602864485.6931000
2008-04-01	110332361982.8620000
2008-07-01	106950986983.4870000
2008-10-01	91491781072.4957000
2009-01-01	73001270082.2634000
2009-04-01	76229846620.5441000
2009-07-01	83600559120.6199000
2009-10-01	88794138152.5228100
2010-01-01	89601705260.4125000
2010-04-01	99279730583.3893900
2010-07-01	100353088544.0970000
2010-10-01	102767433256.0870000
2011-01-01	106326568125.4550000
2011-04-01	116126993948.2670000
2011-07-01	115914514426.3140000
2011-10-01	113273748813.1130000
2012-01-01	113597216870.0490000
2012-04-01	118089113008.7360100
2012-07-01	115569090829.1530000
2012-10-01	115140591899.8170000
2013-01-01	112251722375.4509900
2013-04-01	118295734880.9359900
2013-07-01	115921792877.3670000
2013-10-01	115232418738.1640000
2014-01-01	108409128058.8950000
2014-04-01	120922167244.3350000
2014-07-01	119098246489.2470100
2014-10-01	115346578157.0020000
2015-01-01	103405347447.7720000
2015-04-01	110793117474.7800000
2015-07-01	104706761636.2820000
2015-10-01	100893835939.5990000
2016-01-01	94909778592.7250000
2016-04-01	104735065772.3700100
2016-07-01	104433843302.5520000
2016-10-01	98605331100.6382000
2017-01-01	101410840455.7090000
2017-04-01	110486971958.0950000
2017-07-01	110208507751.7640000
2017-10-01	110559749103.4000000
2018-01-01	111227720732.5620100
2018-04-01	120795555102.6890000
2018-07-01	115142067190.5160000