Quarter	US Dollars, sum over component sub-periods
1960-01-01	517062567.77950203
1960-04-01	543331274.72817710
1960-07-01	596799871.75543000
1960-10-01	598008318.74267400
1961-01-01	600442809.83376990
1961-04-01	506490093.56412697
1961-07-01	457499200.24479900
1961-10-01	430412431.28250396
1962-01-01	489918466.78000796
1962-04-01	532949559.78363496
1962-07-01	582998814.60639900
1962-10-01	579469334.36371290
1963-01-01	562549686.27493800
1963-04-01	599239756.95801200
1963-07-01	604312707.34735800
1963-10-01	586249817.61134900
1964-01-01	627754103.57981110
1964-04-01	693025122.16130400
1964-07-01	738190070.60252300
1964-10-01	755973751.34497000
1965-01-01	756195955.13280800
1965-04-01	808274401.32346610
1965-07-01	900885364.49385400
1965-10-01	813513044.74335100
1966-01-01	735616878.88457500
1966-04-01	710759504.45240590
1966-07-01	778927829.51936700
1966-10-01	742771432.92712010
1967-01-01	818128016.02474400
1967-04-01	820893968.01961900
1967-07-01	855604142.59072900
1967-10-01	827220873.73186600
1968-01-01	933805119.77244810
1968-04-01	906081441.87547900
1968-07-01	938512948.41305600
1968-10-01	894094925.66202010
1969-01-01	823176243.87661290
1969-04-01	905300827.38079300
1969-07-01	996150046.47232800
1969-10-01	999502237.50108600
1970-01-01	958613929.17403200
1970-04-01	1012874950.93093000
1970-07-01	1068864901.10768000
1970-10-01	1045136939.50992000
1971-01-01	1028928998.95474020
1971-04-01	1107238470.14647000
1971-07-01	1195743538.73507000
1971-10-01	1155568370.55978010
1972-01-01	1095720003.34294990
1972-04-01	1008777003.07769000
1972-07-01	1067165867.39157990
1972-10-01	1129290571.45811000
1973-01-01	1304945521.31771000
1973-04-01	1455908455.68191000
1973-07-01	1788253548.00189020
1973-10-01	1960544507.68502020
1974-01-01	2212271206.91747000
1974-04-01	2623496324.64138000
1974-07-01	3128659957.67427000
1974-10-01	2780165554.40558960
1975-01-01	2409955748.45032000
1975-04-01	2340493392.42088000
1975-07-01	2435402813.28399000
1975-10-01	2442742895.83260000
1976-01-01	2592240728.95516000
1976-04-01	2655117215.00118970
1976-07-01	2999464221.57214000
1976-10-01	2816663380.38003000
1977-01-01	3074665003.81183000
1977-04-01	3083036887.78901000
1977-07-01	3146771963.23623000
1977-10-01	2984762914.35464000
1978-01-01	3275684967.36012000
1978-04-01	3292075845.51460030
1978-07-01	3647901303.30954000
1978-10-01	3941006359.36083030
1979-01-01	3758940860.81112000
1979-04-01	3997211738.11699000
1979-07-01	4063524176.67111000
1979-10-01	4428513285.83382000
1980-01-01	4748858731.41378000
1980-04-01	4657159012.50448000
1980-07-01	5513514150.49801100
1980-10-01	5629762727.99908100
1981-01-01	5705347070.56236100
1981-04-01	5810663192.47980000
1981-07-01	6265276480.13822000
1981-10-01	6123806663.05626000
1982-01-01	6356145918.69188000
1982-04-01	6250762731.63009000
1982-07-01	5813215946.65655000
1982-10-01	5311835613.31647000
1983-01-01	4775425102.90895000
1983-04-01	4775938300.35380000
1983-07-01	5080408825.66141000
1983-10-01	5074670321.92316100
1984-01-01	5565614780.31599000
1984-04-01	5764391165.29080000
1984-07-01	6481874168.79608000
1984-10-01	6020792298.15248000
1985-01-01	5253375188.60247000
1985-04-01	5639148433.82534000
1985-07-01	6555137191.81636000
1985-10-01	6364971859.22142000
1986-01-01	6109181118.98326000
1986-04-01	6142839061.25227000
1986-07-01	5973747666.95119000
1986-10-01	6192535978.06292000
1987-01-01	5903070508.78206000
1987-04-01	6620958373.71806050
1987-07-01	6959122225.49282000
1987-10-01	7286633552.85800000
1988-01-01	7399028517.54826100
1988-04-01	7867494844.70537000
1988-07-01	8809525328.80274000
1988-10-01	9973721547.53580000
1989-01-01	9768551652.10249000
1989-04-01	9899342119.54680000
1989-07-01	10640439665.62010000
1989-10-01	10145562493.77700000
1990-01-01	9765820687.08052000
1990-04-01	8874519797.86896000
1990-07-01	10397686485.00990000
1990-10-01	10173163220.35060000
1991-01-01	9387627375.36186000
1991-04-01	8989544246.55619000
1991-07-01	10058774992.00330000
1991-10-01	10339346225.76610000
1992-01-01	9422324241.24561000
1992-04-01	9737534531.20855000
1992-07-01	11040145576.69690000
1992-10-01	10881554754.67000000
1993-01-01	9874069299.70267100
1993-04-01	10265558526.08370000
1993-07-01	11342076471.09880000
1993-10-01	11087256101.67680000
1994-01-01	10813813903.49779900
1994-04-01	11522150101.74620000
1994-07-01	13887614571.11820000
1994-10-01	14349026964.93610000
1995-01-01	13711836658.33620000
1995-04-01	13842173536.69019900
1995-07-01	15121805649.22090000
1995-10-01	14848161292.58660000
1996-01-01	14356377045.28229900
1996-04-01	14806457080.16670000
1996-07-01	15816292529.51940000
1996-10-01	16073684843.46950000
1997-01-01	14698185297.44260000
1997-04-01	15627593796.52490000
1997-07-01	16663938643.84340100
1997-10-01	16012415285.20310000
1998-01-01	14990993804.76600000
1998-04-01	14898357480.64050000
1998-07-01	15566529049.98170000
1998-10-01	15603092722.98330000
1999-01-01	14834399653.06880000
1999-04-01	15499101031.13570000
1999-07-01	17437436233.60560000
1999-10-01	17923473717.64299800
2000-01-01	16822124824.25260200
2000-04-01	17221071404.23830000
2000-07-01	17837275014.33080000
2000-10-01	16978249799.95640000
2001-01-01	14879149749.10879900
2001-04-01	15232679177.32660000
2001-07-01	15613782808.19670000
2001-10-01	16219133299.88730000
2002-01-01	15072005713.80960000
2002-04-01	17062972113.96740000
2002-07-01	18336813637.80050000
2002-10-01	20229379021.66730000
2003-01-01	19169899673.33880200
2003-04-01	20886806349.21120000
2003-07-01	22057728845.65040000
2003-10-01	24142335840.24740200
2004-01-01	23997930250.39190000
2004-04-01	25052090575.57990000
2004-07-01	26974995566.58980000
2004-10-01	29762760420.24000000
2005-01-01	27446146420.24750000
2005-04-01	29916090966.84589800
2005-07-01	31135780272.76659800
2005-10-01	32300407853.53989800
2006-01-01	30633711125.91119800
2006-04-01	34092369344.58540000
2006-07-01	34701530183.28580500
2006-10-01	37291604199.15120000
2007-01-01	35920503727.31040000
2007-04-01	39015141112.27560400
2007-07-01	41732752243.17400000
2007-10-01	46907229175.58870000
2008-01-01	46690210760.32290000
2008-04-01	52129939800.72380000
2008-07-01	53679478231.52550000
2008-10-01	43331098717.43400000
2009-01-01	34417949613.00960000
2009-04-01	36004206863.88080000
2009-07-01	42852434955.66160000
2009-10-01	48957229101.59811000
2010-01-01	45888232437.15230000
2010-04-01	48137190795.19620000
2010-07-01	51237103799.68760000
2010-10-01	57124337660.76950000
2011-01-01	53696934930.29259500
2011-04-01	60649616591.74780000
2011-07-01	67103068223.81620000
2011-10-01	67519525600.23140000
2012-01-01	64829918901.69770000
2012-04-01	65194475969.52700000
2012-07-01	67463204191.92100500
2012-10-01	69134043416.04060000
2013-01-01	60066754579.50410000
2013-04-01	61233655167.27600000
2013-07-01	62432956138.92750000
2013-10-01	62997779243.21010000
2014-01-01	56336348583.41610000
2014-04-01	60480608890.38710000
2014-07-01	62707565858.37840000
2014-10-01	58938287582.06740000
2015-01-01	50880952842.88620000
2015-04-01	52396500375.30910000
2015-07-01	52093869901.13360000
2015-10-01	51857790982.37089500
2016-01-01	45282562493.97920000
2016-04-01	48328974612.04540000
2016-07-01	51747558843.16030000
2016-10-01	53365127844.32970000
2017-01-01	51786875231.32010000
2017-04-01	52666418537.37510000
2017-07-01	57384590804.03010000
2017-10-01	59202593955.56260000
2018-01-01	58268798238.30730400
2018-04-01	59830941672.16550000