Quarter	US Dollars, monthly level
1960-01-01	733734744.4971341
1960-04-01	689972521.5637850
1960-07-01	665686985.4672370
1960-10-01	813872968.1582501
1961-01-01	723882687.4564410
1961-04-01	711690381.8288160
1961-07-01	686509817.7997020
1961-10-01	809713130.9057910
1962-01-01	791336014.3323979
1962-04-01	737732332.8997390
1962-07-01	711466370.5048940
1962-10-01	892327522.0725460
1963-01-01	776414469.3520060
1963-04-01	854498062.0976050
1963-07-01	794259884.4394090
1963-10-01	957311785.7211080
1964-01-01	933775675.4628550
1964-04-01	967565555.8960780
1964-07-01	901595601.3470831
1964-10-01	1068784213.5058501
1965-01-01	1099127658.4758600
1965-04-01	1075216468.1384000
1965-07-01	1046835143.6864700
1965-10-01	1168592566.2703102
1966-01-01	1181633393.0770500
1966-04-01	1133654077.3690300
1966-07-01	1058714280.1992500
1966-10-01	1192083486.9398100
1967-01-01	1185487697.1146898
1967-04-01	1147916274.4419800
1967-07-01	1137299217.8230300
1967-10-01	1239993112.3823900
1968-01-01	1293285281.2836400
1968-04-01	1202093831.6466200
1968-07-01	1230216071.8285400
1968-10-01	1404892125.8915298
1969-01-01	1394107546.4274800
1969-04-01	1466378098.2363598
1969-07-01	1432844308.3414100
1969-10-01	1619799745.4190200
1970-01-01	1694537910.1513700
1970-04-01	1794652027.9646200
1970-07-01	1616053883.9949600
1970-10-01	1884589531.7587400
1971-01-01	1731636131.6887200
1971-04-01	1738039718.9095900
1971-07-01	1648112130.9849600
1971-10-01	1974894264.3527100
1972-01-01	1976701824.5908701
1972-04-01	1985516517.9884698
1972-07-01	1876057437.5440700
1972-10-01	2271444274.8281900
1973-01-01	2309867859.3138900
1973-04-01	2659898043.3878098
1973-07-01	2622421832.2496700
1973-10-01	3347449039.0426598
1974-01-01	3665692885.7339700
1974-04-01	4243174401.8885603
1974-07-01	3976013948.8716397
1974-10-01	4820210474.0226800
1975-01-01	4899206084.5656400
1975-04-01	4832148963.2020000
1975-07-01	3951252985.0786000
1975-10-01	4404276395.1894900
1976-01-01	4368185088.4512400
1976-04-01	4603846623.1099810
1976-07-01	4495425107.9310400
1976-10-01	5696293902.2619700
1977-01-01	5333904226.0597900
1977-04-01	5081787316.5862500
1977-07-01	4616416353.6975300
1977-10-01	5111497577.2321690
1978-01-01	4758971472.5703800
1978-04-01	4915315816.3348900
1978-07-01	4784630812.4716900
1978-10-01	6136627439.6170410
1979-01-01	6059828796.5570000
1979-04-01	6803931198.2881000
1979-07-01	7133938732.0868700
1979-10-01	8743910397.2191900
1980-01-01	8727991610.4779100
1980-04-01	7830513463.2242900
1980-07-01	8392118050.4016700
1980-10-01	8571882479.7934610
1981-01-01	7581713346.0450800
1981-04-01	6956062460.5214800
1981-07-01	6516831976.1161790
1981-10-01	7805648589.8353500
1982-01-01	6976044338.7164510
1982-04-01	6738670368.3489600
1982-07-01	6533640464.6741705
1982-10-01	7338464034.7688010
1983-01-01	6483228231.4157900
1983-04-01	6249393101.8262005
1983-07-01	6117531334.0121000
1983-10-01	7248177154.6618200
1984-01-01	6699212605.7588210
1984-04-01	6693650072.2431100
1984-07-01	6045726216.0102005
1984-10-01	6984716229.0054000
1985-01-01	6703115992.8204600
1985-04-01	6943649353.4918800
1985-07-01	6799023593.7380300
1985-10-01	8112066212.9569090
1986-01-01	7499151665.3582100
1986-04-01	8227577631.2904100
1986-07-01	7788541410.2699000
1986-10-01	9194553707.6931000
1987-01-01	9404528558.8503400
1987-04-01	9999771466.0854900
1987-07-01	9404646272.0428090
1987-10-01	11979020730.7193010
1988-01-01	11253401992.2483000
1988-04-01	11606270340.3461000
1988-07-01	10115798891.5184000
1988-10-01	12870372812.7951010
1989-01-01	12016264287.9324000
1989-04-01	12339916385.5311000
1989-07-01	11084564201.7143000
1989-10-01	13690764449.6484990
1990-01-01	13523717652.0469000
1990-04-01	13227354612.6512000
1990-07-01	12689831251.6757010
1990-10-01	15397973578.0364000
1991-01-01	13483177377.9255000
1991-04-01	12214797289.9820000
1991-07-01	11177970223.8722000
1991-10-01	13132583472.0152000
1992-01-01	12760982505.6640990
1992-04-01	12600470911.2485000
1992-07-01	12594331818.2064000
1992-10-01	12145734024.7775000
1993-01-01	10543950558.3935000
1993-04-01	10997885510.1596000
1993-07-01	9793217818.0415900
1993-10-01	11564684744.8285000
1994-01-01	11368926346.6348000
1994-04-01	12520749297.2051000
1994-07-01	12095920817.3555000
1994-10-01	15969986289.6284000
1995-01-01	15422603906.8172000
1995-04-01	15871718889.8717000
1995-07-01	15216311453.4812010
1995-10-01	18229095942.8739000
1996-01-01	16620343104.4350010
1996-04-01	16338357155.3902000
1996-07-01	15600827586.8986000
1996-10-01	18355071370.1058000
1997-01-01	15922134554.7689000
1997-04-01	16563120768.4492000
1997-07-01	15091559040.6922990
1997-10-01	18101592781.4700000
1998-01-01	16793194428.7374000
1998-04-01	17141425851.8103000
1998-07-01	16048890216.9543020
1998-10-01	18634388167.2646000
1999-01-01	16884525255.0786000
1999-04-01	16563747224.1441020
1999-07-01	16255924121.7410000
1999-10-01	19242329591.9478000
2000-01-01	18488330925.6061000
2000-04-01	18657177255.8429000
2000-07-01	17606273543.7742000
2000-10-01	18580734438.5811000
2001-01-01	17741863846.0725020
2001-04-01	15935443465.5324000
2001-07-01	14429014205.7671990
2001-10-01	16157668453.5813000
2002-01-01	15667526046.3385000
2002-04-01	16632322310.2589000
2002-07-01	16308497868.7284000
2002-10-01	19163678610.5532040
2003-01-01	20542842219.6380000
2003-04-01	20909909672.6026000
2003-07-01	19304335364.9092980
2003-10-01	23531876330.6481970
2004-01-01	23721499761.7375030
2004-04-01	24398761450.3085000
2004-07-01	23935012021.4810000
2004-10-01	28854618074.0506970
2005-01-01	27343044953.0011020
2005-04-01	28603087331.0309000
2005-07-01	26224175006.7890000
2005-10-01	29378615149.9432000
2006-01-01	28965326789.4824000
2006-04-01	31598782275.6740000
2006-07-01	31129398289.2062000
2006-10-01	36049451785.3285000
2007-01-01	35873195446.9312000
2007-04-01	37157251079.6520000
2007-07-01	37534400987.8753000
2007-10-01	42923802694.6632000
2008-01-01	43915389676.6222000
2008-04-01	48599626980.4927000
2008-07-01	42564561034.4420000
2008-10-01	33761129963.7870000
2009-01-01	26892655305.8557000
2009-04-01	27618905448.9073000
2009-07-01	30477040405.0340000
2009-10-01	35084870970.0976940
2010-01-01	34293639128.7003970
2010-04-01	36047176190.4462050
2010-07-01	36464309596.8036040
2010-10-01	42065572212.6249000
2011-01-01	43657978060.6174000
2011-04-01	46831154925.2261050
2011-07-01	42897510908.0494000
2011-10-01	43678229342.8700940
2012-01-01	42458952571.2989040
2012-04-01	41015984619.1910000
2012-07-01	39385539289.9331000
2012-10-01	41841488137.0726000
2013-01-01	39929279741.3731000
2013-04-01	39941422061.5256000
2013-07-01	38577581517.9140000
2013-10-01	42160788327.4247000
2014-01-01	41227793749.9194000
2014-04-01	42379441695.0433960
2014-07-01	39479106656.8880000
2014-10-01	39155114232.8158950
2015-01-01	33921313898.1451000
2015-04-01	34906975483.9088000
2015-07-01	33516029288.1800000
2015-10-01	36092247879.9734000
2016-01-01	33544439391.3187000
2016-04-01	36672201758.3980000
2016-07-01	34048769774.6146970
2016-10-01	36809878686.4907000
2017-01-01	36283951784.7311000
2017-04-01	37129919458.9697000
2017-07-01	38385776167.1887050
2017-10-01	42430527274.7495040
2018-01-01	43082218725.3532000
2018-04-01	43743576568.7724000
2018-07-01	39239535977.0001000