Quarter	US Dollars, monthly level
1960-01-01	545763448.97158200
1960-04-01	504537868.89882004
1960-07-01	441945420.97911500
1960-10-01	554893486.77339900
1961-01-01	558701989.96800300
1961-04-01	608567327.80551300
1961-07-01	555917320.88282600
1961-10-01	631944085.30488600
1962-01-01	611049684.02515600
1962-04-01	615640891.48059000
1962-07-01	509704337.91404000
1962-10-01	621643067.77203700
1963-01-01	632166613.51854300
1963-04-01	653058270.97914710
1963-07-01	710375753.94301600
1963-10-01	815054746.42766390
1964-01-01	792064830.69118200
1964-04-01	798441443.50304810
1964-07-01	682825815.30733400
1964-10-01	771560839.00156700
1965-01-01	736454556.30412010
1965-04-01	765621693.99600900
1965-07-01	741065376.61048790
1965-10-01	761143841.86303590
1966-01-01	734277364.08235700
1966-04-01	805304978.44059800
1966-07-01	797706546.09408500
1966-10-01	813379196.38651000
1967-01-01	841057862.46026710
1967-04-01	912116784.81854300
1967-07-01	824309672.00569900
1967-10-01	877433069.43214610
1968-01-01	793342936.48691610
1968-04-01	894296824.34924590
1968-07-01	856767915.27317390
1968-10-01	957546823.61222800
1969-01-01	939709560.99220910
1969-04-01	992720674.14750300
1969-07-01	1126048899.97111000
1969-10-01	1127946066.24009000
1970-01-01	1171788215.52182000
1970-04-01	1183734782.78587000
1970-07-01	1204942613.33593000
1970-10-01	1183081687.53024980
1971-01-01	1155721776.36138000
1971-04-01	1343524283.77569000
1971-07-01	1388718847.97494980
1971-10-01	1337573298.20887000
1972-01-01	1416575404.32184980
1972-04-01	1584387304.83382990
1972-07-01	1617661474.43220000
1972-10-01	1842992642.36055020
1973-01-01	2246071691.50072000
1973-04-01	2346657134.86620000
1973-07-01	2379675144.80478000
1973-10-01	2616446612.38695000
1974-01-01	2517782429.55853000
1974-04-01	2720497041.99160000
1974-07-01	2970228052.57670000
1974-10-01	2866756540.52712000
1975-01-01	2924188014.95495030
1975-04-01	3159733606.98666000
1975-07-01	3031227546.26252000
1975-10-01	2900218161.94206000
1976-01-01	2943891504.89964000
1976-04-01	3327143379.78828000
1976-07-01	3712365925.35492000
1976-10-01	3223437387.31172040
1977-01-01	3125799923.92509000
1977-04-01	3358217039.75696040
1977-07-01	3424742381.62179000
1977-10-01	3479628934.96212000
1978-01-01	3335429447.79508970
1978-04-01	3617984528.90780970
1978-07-01	3519653872.09613000
1978-10-01	3959806009.24598000
1979-01-01	4083916121.26415000
1979-04-01	4601119005.43239000
1979-07-01	4561906450.79572000
1979-10-01	5321166524.39091000
1980-01-01	5341556857.60415000
1980-04-01	5502084648.80693000
1980-07-01	5254301035.34060000
1980-10-01	5626009552.84708000
1981-01-01	5447969146.76019000
1981-04-01	5706786695.78709000
1981-07-01	5297359861.87453000
1981-10-01	5041180664.06740000
1982-01-01	5271069546.69430100
1982-04-01	5647468308.83028000
1982-07-01	5254184892.86743000
1982-10-01	5173638420.86825000
1983-01-01	4871537850.13634000
1983-04-01	4829247837.46808050
1983-07-01	4988125728.55112900
1983-10-01	5436224672.87781000
1984-01-01	5592653075.82637000
1984-04-01	5765926169.20386000
1984-07-01	6078795424.20058000
1984-10-01	5680200033.11100000
1985-01-01	5208824653.42308000
1985-04-01	5952619724.64709000
1985-07-01	5999531890.16043000
1985-10-01	5569230308.90073000
1986-01-01	5891819040.07187000
1986-04-01	5552844442.23149000
1986-07-01	5178261389.03282000
1986-10-01	5991102174.74180000
1987-01-01	5851266820.78865050
1987-04-01	6727434310.84373950
1987-07-01	6593408157.31976000
1987-10-01	7396926464.61771000
1988-01-01	7848804381.98652000
1988-04-01	7797589174.25187000
1988-07-01	8226912250.26721000
1988-10-01	9323516786.48766900
1989-01-01	8933495313.92257900
1989-04-01	9356284503.66520900
1989-07-01	9155159155.66411000
1989-10-01	9694804846.98329000
1990-01-01	9308322781.01909000
1990-04-01	9608173399.57991000
1990-07-01	10214278696.36299900
1990-10-01	10598671582.21490000
1991-01-01	9869223707.64671100
1991-04-01	10405050527.57480000
1991-07-01	10564689710.53600000
1991-10-01	11003470267.53630000
1992-01-01	9946957568.94558000
1992-04-01	10815946208.21920000
1992-07-01	10844317989.52670100
1992-10-01	11203366195.64400000
1993-01-01	9959243880.09663000
1993-04-01	10638636823.89820000
1993-07-01	10775774963.72900000
1993-10-01	11197162815.81180000
1994-01-01	10781979438.91210000
1994-04-01	11866235434.22010000
1994-07-01	11833407983.61840000
1994-10-01	12900454212.75190000
1995-01-01	12179412019.53180000
1995-04-01	12802283431.22840000
1995-07-01	13847321244.87640000
1995-10-01	14287006292.86679800
1996-01-01	14326874531.59459900
1996-04-01	15282526024.37710000
1996-07-01	14988801412.20440100
1996-10-01	15728356432.89250000
1997-01-01	14843688772.85930000
1997-04-01	16225727705.79310000
1997-07-01	15818724978.23140000
1997-10-01	15968835616.85310000
1998-01-01	13520752737.17540000
1998-04-01	14366363012.42369800
1998-07-01	13648137724.60860000
1998-10-01	14338634299.71819900
1999-01-01	12617779818.76400000
1999-04-01	13242526934.64850000
1999-07-01	14245582559.92190000
1999-10-01	15976584799.93220000
2000-01-01	15058677725.84940000
2000-04-01	15719411886.94889800
2000-07-01	16350166594.09640100
2000-10-01	16647179783.79320000
2001-01-01	14900344364.32770000
2001-04-01	16215134938.72150200
2001-07-01	16243912485.77439900
2001-10-01	15921736454.36450000
2002-01-01	14879233283.84450000
2002-04-01	16313653696.35640100
2002-07-01	16588053301.61019900
2002-10-01	17190147548.80990000
2003-01-01	16515122364.58050000
2003-04-01	16947021946.88390000
2003-07-01	17533370295.68470000
2003-10-01	19305995393.38850000
2004-01-01	19535087373.77090000
2004-04-01	21383317595.16370000
2004-07-01	21942897676.89310000
2004-10-01	23756041958.12050000
2005-01-01	22678578918.41760000
2005-04-01	27125192929.45800000
2005-07-01	27267627813.92030000
2005-10-01	28742851946.33390000
2006-01-01	26862805446.39980000
2006-04-01	31029103064.34640000
2006-07-01	32246090465.78110000
2006-10-01	33313740629.87269600
2007-01-01	31300895141.91690000
2007-04-01	35272540020.95910000
2007-07-01	36243094095.29170000
2007-10-01	38527542093.17979400
2008-01-01	38441178447.88180500
2008-04-01	49272342015.17530000
2008-07-01	53660927858.91390000
2008-10-01	44800857859.49680000
2009-01-01	36868146418.38290000
2009-04-01	36079380148.83780000
2009-07-01	38648324870.49670400
2009-10-01	42659392663.63940400
2010-01-01	41802634214.41569500
2010-04-01	53836314110.87890000
2010-07-01	56271676300.57800000
2010-10-01	60755025603.98160000
2011-01-01	56723388897.90200000
2011-04-01	69616292838.83060000
2011-07-01	73809597901.82340000
2011-10-01	70262221579.40410000
2012-01-01	61306863399.64260000
2012-04-01	66795541900.49229400
2012-07-01	64224405314.83031000
2012-10-01	64030236656.33290000
2013-01-01	60407252583.41120000
2013-04-01	64549592752.39770000
2013-07-01	62640891949.53450000
2013-10-01	64951687353.80490000
2014-01-01	61309918622.09650000
2014-04-01	61650677597.84240000
2014-07-01	60230819086.57270000
2014-10-01	56730111562.90060400
2015-01-01	49090466917.68120000
2015-04-01	47235613978.75710000
2015-07-01	47006906551.37370000
2015-10-01	44434927241.34450000
2016-01-01	40458966384.15940000
2016-04-01	45317456456.99710000
2016-07-01	48742382552.40629600
2016-10-01	57929985513.21310000
2017-01-01	56494704094.31020000
2017-04-01	56139614592.46210500
2017-07-01	59622076052.47840000
2017-10-01	58776045687.39350000
2018-01-01	61507875011.98830000
2018-04-01	63777677584.41070000
2018-07-01	64611663072.93500500