Quarter	US Dollars, sum over component sub-periods
2005-01-01	39115280312.236800
2005-04-01	31127023363.507800
2005-07-01	40330580901.040000
2005-10-01	42964371033.565200
2006-01-01	44013536584.797100
2006-04-01	42397993707.898800
2006-07-01	54407446888.597400
2006-10-01	52783162337.930400
2007-01-01	62237727672.821300
2007-04-01	60597192960.465904
2007-07-01	72124832361.143690
2007-10-01	75078389438.906000
2008-01-01	69222699489.925310
2008-04-01	70249165534.727310
2008-07-01	77979950946.546310
2008-10-01	71779209808.126600
2009-01-01	60112833806.536194
2009-04-01	59055488056.836200
2009-07-01	72877581152.821810
2009-10-01	73962622689.033100
2010-01-01	64607996491.664700
2010-04-01	66706650661.308304
2010-07-01	79477066461.230000
2010-10-01	80423199732.831100
2011-01-01	80397883952.083000
2011-04-01	95695596777.056090
2011-07-01	110201642383.179000
2011-10-01	102126026400.160000
2012-01-01	97538535059.541200
2012-04-01	98801339400.928910
2012-07-01	106528493207.861000
2012-10-01	108392801793.832000
2013-01-01	111259471567.752000
2013-04-01	122314658414.085000
2013-07-01	132141094082.152010
2013-10-01	126960507933.083010
2014-01-01	120145308280.896000
2014-04-01	143537570014.271030
2014-07-01	151954055306.458000
2014-10-01	142102667174.587980
2015-01-01	134749152718.859000
2015-04-01	99092800465.446800
2015-07-01	143456272038.123000
2015-10-01	131555140485.075010
2016-01-01	132616150787.760010
2016-04-01	117303531236.855000
2016-07-01	137396607135.257020
2016-10-01	124084307117.026000
2017-01-01	129563412011.921000
2017-04-01	127851976659.743000
2017-07-01	165660480109.253000
2017-10-01	155620060267.190000
2018-01-01	161149203744.353000
2018-04-01	146485846641.963000