Quarter	US Dollars, monthly level
1960-01-01	256008122.86400900
1960-04-01	281952376.52451700
1960-07-01	286235288.58460200
1960-10-01	296143194.58471500
1961-01-01	277785939.70765300
1961-04-01	302788059.10579896
1961-07-01	308819724.90660400
1961-10-01	313797463.30877600
1962-01-01	296325727.44501100
1962-04-01	320828257.84174400
1962-07-01	316878091.74219600
1962-10-01	336807114.99546700
1963-01-01	300264504.52018700
1963-04-01	335439417.85569197
1963-07-01	335671295.27567700
1963-10-01	362456209.90990500
1964-01-01	326744465.26322600
1964-04-01	357796832.04069100
1964-07-01	372832245.71546600
1964-10-01	397716888.57470500
1965-01-01	364307279.28592500
1965-04-01	392155235.29867100
1965-07-01	418100193.42472100
1965-10-01	435518044.90242900
1966-01-01	391985517.70500700
1966-04-01	419449480.55163400
1966-07-01	433948955.56499004
1966-10-01	448023586.87749400
1967-01-01	412422787.52725500
1967-04-01	456749543.25286300
1967-07-01	467086756.15885300
1967-10-01	483211393.11879600
1968-01-01	451224119.83074500
1968-04-01	488469649.70714400
1968-07-01	500007557.12604904
1968-10-01	560105505.91730500
1969-01-01	528842334.89964205
1969-04-01	582244958.26654800
1969-07-01	628865231.55127800
1969-10-01	684448282.14735100
1970-01-01	651086111.00873800
1970-04-01	720560451.94335600
1970-07-01	727925963.49347100
1970-10-01	771727244.50479300
1971-01-01	713928745.61186410
1971-04-01	780713690.39039600
1971-07-01	806239289.56630000
1971-10-01	875813752.63690400
1972-01-01	836295525.09042910
1972-04-01	926563306.38451600
1972-07-01	952720900.16680000
1972-10-01	1166889903.05000000
1973-01-01	983621407.58732200
1973-04-01	1274022619.32623000
1973-07-01	1456872725.19122980
1973-10-01	1553093312.17107990
1974-01-01	1565316843.23351000
1974-04-01	1837264197.02449000
1974-07-01	1814583652.63332000
1974-10-01	1939471423.44294000
1975-01-01	1880161202.31386020
1975-04-01	1928964060.81267000
1975-07-01	1759019287.98224000
1975-10-01	1947350445.22729020
1976-01-01	1831202608.87097000
1976-04-01	2035990369.41084980
1976-07-01	2155038240.97775000
1976-10-01	2482614664.60146000
1977-01-01	2247818640.60553030
1977-04-01	2397247261.38920970
1977-07-01	2461909890.46191000
1977-10-01	2700383476.70897960
1978-01-01	2717454822.14825000
1978-04-01	2949781636.24344000
1978-07-01	2946044949.93869970
1978-10-01	3546004008.88403000
1979-01-01	3364934127.24743000
1979-04-01	3632343755.79187970
1979-07-01	3949722089.17476000
1979-10-01	4532852068.38464100
1980-01-01	4242540969.03553000
1980-04-01	4296355521.79790000
1980-07-01	4504628333.03315000
1980-10-01	4432807385.00638000
1981-01-01	3938411267.18497000
1981-04-01	3861269058.81645000
1981-07-01	3666490846.48804000
1981-10-01	4370931168.58688000
1982-01-01	3933048105.26039030
1982-04-01	4081162696.32757000
1982-07-01	3654774120.08523000
1982-10-01	3982185415.28642000
1983-01-01	3825357492.44261030
1983-04-01	3932156994.78134000
1983-07-01	3702545911.85045000
1983-10-01	3964183966.82909000
1984-01-01	3997103654.68858000
1984-04-01	3989013710.75511000
1984-07-01	3723261315.74198000
1984-10-01	4015594990.96760000
1985-01-01	3807016600.73573000
1985-04-01	4190969607.56597950
1985-07-01	4259916712.75164030
1985-10-01	4994730821.93968000
1986-01-01	5110270302.84294000
1986-04-01	5585961271.02073000
1986-07-01	5664751313.75815000
1986-10-01	6153431875.08694000
1987-01-01	6277554213.37731900
1987-04-01	6640631595.34678000
1987-07-01	6527195773.10820000
1987-10-01	7702443957.23038000
1988-01-01	7455615074.68686000
1988-04-01	8014108825.33861000
1988-07-01	7209703183.11683000
1988-10-01	8384278348.08134000
1989-01-01	7876219705.86953900
1989-04-01	8062443690.76342000
1989-07-01	7676671652.72106000
1989-10-01	8867094640.14934000
1990-01-01	9559491730.25503000
1990-04-01	9927172367.14007000
1990-07-01	9871575062.57005100
1990-10-01	11785202300.96519900
1991-01-01	10704666922.38840000
1991-04-01	9975146594.49707000
1991-07-01	9400201816.34712000
1991-10-01	11075828756.96480000
1992-01-01	10747356987.69010000
1992-04-01	11052149691.17110000
1992-07-01	11420724211.65150000
1992-10-01	11175302928.30700000
1993-01-01	9799545454.54545000
1993-04-01	10274120491.63810200
1993-07-01	9720647867.62992000
1993-10-01	10366810044.17580000
1994-01-01	9828993948.56278000
1994-04-01	10838690312.70839900
1994-07-01	11496867047.68260000
1994-10-01	12903153362.32010000
1995-01-01	14701307851.51260000
1995-04-01	15677392238.35990000
1995-07-01	14515230159.81420000
1995-10-01	15375429120.70310000
1996-01-01	15071580911.75690000
1996-04-01	14421127123.00570000
1996-07-01	14408021949.30760000
1996-10-01	15734438242.93810000
1997-01-01	14197766329.78100000
1997-04-01	15164416384.58900000
1997-07-01	14162805802.12170000
1997-10-01	15939811376.80079800
1998-01-01	14767410169.97780000
1998-04-01	15735818181.81820000
1998-07-01	15643245442.10640000
1998-10-01	17543393858.58270000
1999-01-01	16061467709.99520000
1999-04-01	16008603226.72379900
1999-07-01	16119807447.74070200
1999-10-01	17802936785.01260000
2000-01-01	17023498403.63590200
2000-04-01	16973391911.24240000
2000-07-01	16227353287.10140000
2000-10-01	17334452501.93409700
2001-01-01	18360357541.96959700
2001-04-01	17227388762.82310000
2001-07-01	16894934412.80320000
2001-10-01	18299447413.80930000
2002-01-01	17532323739.18220000
2002-04-01	19434030371.08010000
2002-07-01	19830368774.49040000
2002-10-01	21917530443.40710000
2003-01-01	22758377938.73390200
2003-04-01	23482626633.03490000
2003-07-01	23610093211.11770000
2003-10-01	27405234024.22490000
2004-01-01	28443909042.82740000
2004-04-01	28883363970.37400000
2004-07-01	28567365270.99780000
2004-10-01	32492835009.93510000
2005-01-01	30615595298.06560000
2005-04-01	31965548975.76900000
2005-07-01	30276914564.81450000
2005-10-01	32149930511.54200400
2006-01-01	31421370618.41180000
2006-04-01	33804426049.42099800
2006-07-01	33886963392.54470000
2006-10-01	37805409449.64060000
2007-01-01	38125528697.36650000
2007-04-01	40166813679.02970000
2007-07-01	40024826214.32460000
2007-10-01	45503151445.68620000
2008-01-01	46585711790.01210000
2008-04-01	50748299500.72780600
2008-07-01	46291209298.14460000
2008-10-01	37832187305.79000000
2009-01-01	31007232706.26220000
2009-04-01	32514474477.36610000
2009-07-01	34898906168.72590000
2009-10-01	38553369938.88530000
2010-01-01	35153252349.93530000
2010-04-01	36750540041.75110000
2010-07-01	38142882318.38650000
2010-10-01	42400110695.82789600
2011-01-01	42573077518.43010000
2011-04-01	46213241534.00419600
2011-07-01	45005369848.86429600
2011-10-01	43574732065.52330000
2012-01-01	42042521504.39450000
2012-04-01	41599149434.40180000
2012-07-01	40774420470.53480000
2012-10-01	42302556658.40040000
2013-01-01	42262227579.32410000
2013-04-01	43581157165.66730000
2013-07-01	43144945396.22200000
2013-10-01	46160673736.53980000
2014-01-01	45276957874.72730000
2014-04-01	45985676985.29870600
2014-07-01	43656274789.81380000
2014-10-01	43253240309.79810000
2015-01-01	37560304565.10970000
2015-04-01	37973936966.62670000
2015-07-01	38321099621.84870000
2015-10-01	38942677325.68840000
2016-01-01	37033905717.87710000
2016-04-01	39615770005.16810000
2016-07-01	37478574349.19600000
2016-10-01	37862164836.33150500
2017-01-01	39646396098.04950000
2017-04-01	40677450053.07740000
2017-07-01	42540871644.67230000
2017-10-01	45147671789.08610000
2018-01-01	48116948892.52450000
2018-04-01	46622427794.60230000