Quarter	US Dollars, monthly level
1960-01-01	164850143.78882203
1960-04-01	177116430.72214000
1960-07-01	165351553.01000700
1960-10-01	212788499.51408300
1961-01-01	258717666.53205900
1961-04-01	238703524.63013600
1961-07-01	279868911.83172303
1961-10-01	313487816.20522100
1962-01-01	340265973.20170700
1962-04-01	373581547.53810203
1962-07-01	377438510.98261000
1962-10-01	476975986.24107700
1963-01-01	415883487.16256700
1963-04-01	516336403.81316100
1963-07-01	517456861.16399000
1963-10-01	505149484.82741696
1964-01-01	548212285.75647890
1964-04-01	535603592.48745203
1964-07-01	562842404.51263610
1964-10-01	611764353.98784200
1965-01-01	650725566.08344800
1965-04-01	763659071.49553410
1965-07-01	767840245.43354400
1965-10-01	835032585.10425400
1966-01-01	954949688.95221900
1966-04-01	937353817.83799400
1966-07-01	826307580.42915700
1966-10-01	868745469.70383110
1967-01-01	882343643.88588200
1967-04-01	931723420.67037500
1967-07-01	841780492.99888500
1967-10-01	808646803.30434300
1968-01-01	851042304.49537100
1968-04-01	868119747.68392800
1968-07-01	847063579.39020610
1968-10-01	952593416.41929400
1969-01-01	930370456.26544500
1969-04-01	1053617720.29776990
1969-07-01	1044447171.41484000
1969-10-01	1198235980.64387000
1970-01-01	1147497454.21931980
1970-04-01	1268134783.35277000
1970-07-01	1113613272.59896000
1970-10-01	1216033380.38908980
1971-01-01	1168982125.83732000
1971-04-01	1267738054.17318990
1971-07-01	1227228314.25611000
1971-10-01	1334091354.16707020
1972-01-01	1595465624.63483000
1972-04-01	1759770225.14365000
1972-07-01	1652046514.31749000
1972-10-01	1801964903.69235000
1973-01-01	2095264603.72517010
1973-04-01	2426190997.14372000
1973-07-01	2436011105.91552000
1973-10-01	2718066324.97624970
1974-01-01	3185165987.48387000
1974-04-01	4222502557.16692000
1974-07-01	3881953746.65894030
1974-10-01	4143381366.55603000
1975-01-01	4154521645.65671000
1975-04-01	4538654904.29373900
1975-07-01	3614856541.13045000
1975-10-01	3956372860.25103000
1976-01-01	4062508066.00373940
1976-04-01	4427835548.39884950
1976-07-01	4250821797.13615040
1976-10-01	4721758737.63229900
1977-01-01	4205394583.87678000
1977-04-01	5040248954.53525000
1977-07-01	4176173138.12333970
1977-10-01	4406763498.34487000
1978-01-01	4437557647.24408000
1978-04-01	4687019767.34882100
1978-07-01	4405817038.16319000
1978-10-01	5180254915.00143000
1979-01-01	5354444679.97157000
1979-04-01	5844741591.55968000
1979-07-01	6480794501.06466000
1979-10-01	7745063684.68483000
1980-01-01	8058981192.11157000
1980-04-01	8765250731.90798000
1980-07-01	8128707535.23158100
1980-10-01	8804531493.61924000
1981-01-01	7707759520.32066000
1981-04-01	8635232795.99458100
1981-07-01	7078624408.18985100
1981-10-01	8780770260.96934100
1982-01-01	7923707016.95504000
1982-04-01	8191871835.47292000
1982-07-01	7016581304.20861900
1982-10-01	8413153003.07594100
1983-01-01	7733048536.94520000
1983-04-01	7701376794.55994000
1983-07-01	6094398778.11041000
1983-10-01	7654879805.70606000
1984-01-01	7418010002.19859000
1984-04-01	7332413222.10421100
1984-07-01	6636341169.11825000
1984-10-01	7417372798.17481000
1985-01-01	6860152944.44114000
1985-04-01	7575080696.64652900
1985-07-01	6679924340.64421100
1985-10-01	8819130910.31729000
1986-01-01	7477761485.78782900
1986-04-01	9108017759.66998900
1986-07-01	8286774363.32014000
1986-10-01	10613122416.76760100
1987-01-01	10590458648.30310000
1987-04-01	11915807718.79640000
1987-07-01	11825053181.49260000
1987-10-01	14751259920.47410000
1988-01-01	14130700114.68150100
1988-04-01	15718707091.06610100
1988-07-01	13703719965.23690000
1988-10-01	16959060336.78180000
1989-01-01	17468222385.59130000
1989-04-01	18220613489.53750000
1989-07-01	16028381349.68299900
1989-10-01	19244344021.53130000
1990-01-01	20354635821.89200000
1990-04-01	22217955088.82840000
1990-07-01	19759179307.12860000
1990-10-01	25386930771.66760000
1991-01-01	23800786818.22789800
1991-04-01	23540538072.01290000
1991-07-01	20258043991.24760000
1991-10-01	25665382652.60580000
1992-01-01	25054044267.75630000
1992-04-01	26274871292.67230200
1992-07-01	24551690223.91650000
1992-10-01	23853806188.78770000
1993-01-01	20028238846.34119800
1993-04-01	21586428963.90720000
1993-07-01	17443896474.47970200
1993-10-01	20733677932.58020000
1994-01-01	19483448248.63330000
1994-04-01	23876336696.71880000
1994-07-01	22259808130.74810000
1994-10-01	26845944730.88500200
1995-01-01	27394838387.51870000
1995-04-01	30381250709.34670000
1995-07-01	27015908673.57430300
1995-10-01	31146264209.47390000
1996-01-01	31844239699.19180000
1996-04-01	31893975240.59170000
1996-07-01	28704253050.48760200
1996-10-01	32916827285.70540200
1997-01-01	27598973498.09880000
1997-04-01	30384002134.33709700
1997-07-01	26089643107.29680300
1997-10-01	31879186153.80360000
1998-01-01	31922215130.17290000
1998-04-01	34109593849.39099500
1998-07-01	31425655558.65839800
1998-10-01	38639896748.27530000
1999-01-01	32444308454.76470000
1999-04-01	33854578040.18350000
1999-07-01	32067213902.46129600
1999-10-01	36814490081.68470000
2000-01-01	39582884356.41949500
2000-04-01	40655789412.02019500
2000-07-01	36060493895.55910000
2000-10-01	39585248715.95700000
2001-01-01	40814326731.52060000
2001-04-01	39656207600.23711000
2001-07-01	35984405142.05220000
2001-10-01	38236978894.31679500
2002-01-01	36931166661.42540000
2002-04-01	41448131324.81380000
2002-07-01	39785567591.71480600
2002-10-01	46980429049.98490000
2003-01-01	48548601185.40010000
2003-04-01	53085550488.16080000
2003-07-01	48888297563.36180000
2003-10-01	58327819144.80080000
2004-01-01	61335976203.71190000
2004-04-01	64067032005.42380000
2004-07-01	61086790271.90520500
2004-10-01	71890811988.21780000
2005-01-01	70835805729.72490000
2005-04-01	76124558882.51820000
2005-07-01	68074735047.87720000
2005-10-01	73455311744.71950000
2006-01-01	77341386876.06119000
2006-04-01	84383616979.95140000
2006-07-01	78407710065.82960000
2006-10-01	88787962231.25261000
2007-01-01	91347763493.45680000
2007-04-01	96912164388.47119000
2007-07-01	93731038737.15670000
2007-10-01	107698877571.59800000
2008-01-01	113029563994.56601000
2008-04-01	121146664976.36200000
2008-07-01	104398103979.82500000
2008-10-01	83378855292.17280000
2009-01-01	66163543138.98270400
2009-04-01	68803377242.13180000
2009-07-01	74291345465.23640000
2009-10-01	84036367047.58421000
2010-01-01	79760272009.33061000
2010-04-01	80031010800.83500000
2010-07-01	77182005091.05150000
2010-10-01	90029434002.75400000
2011-01-01	94868495506.10720000
2011-04-01	97337221097.23050000
2011-07-01	92615248823.36320000
2011-10-01	91538922896.11280000
2012-01-01	89850136392.40890000
2012-04-01	84707243746.20561000
2012-07-01	79465972363.67670000
2012-10-01	83690810693.25340000
2013-01-01	83237683930.75380000
2013-04-01	85180705573.46541000
2013-07-01	83037319913.23750000
2013-10-01	89100680248.27200000
2014-01-01	91418833511.80410000
2014-04-01	92791914605.27019000
2014-07-01	88521309178.32860000
2014-10-01	86113532694.19461000
2015-01-01	77764835299.11300000
2015-04-01	78953448054.74330000
2015-07-01	77225284543.47750000
2015-10-01	78013931788.58340000
2016-01-01	75093236883.04650000
2016-04-01	80948966778.69249000
2016-07-01	75058916237.44440000
2016-10-01	79705187418.49880000
2017-01-01	84736084081.19860000
2017-04-01	84589234138.68230000
2017-07-01	87161061446.08160000
2017-10-01	94436672837.98580000
2018-01-01	99270454378.13060000
2018-04-01	100225807377.39200000