Quarter	US Dollars, sum over component sub-periods
1999-01-01	11464382063.1418000
1999-04-01	8177402453.2576500
1999-07-01	18232395879.5194000
1999-10-01	13088816441.7893000
2000-01-01	24644014112.7710000
2000-04-01	15230419155.3708000
2000-07-01	20374769434.2475000
2000-10-01	20814646385.2972000
2001-01-01	32406516437.7131000
2001-04-01	10600708728.4402000
2001-07-01	15549830391.9470000
2001-10-01	29218170170.9556000
2002-01-01	32153920465.6704000
2002-04-01	-1507771667.6919398
2002-07-01	20285859569.2431000
2002-10-01	21433175501.8302000
2003-01-01	36784579061.3241000
2003-04-01	6624474209.3180300
2003-07-01	29843680833.8640980
2003-10-01	33557082806.9024000
2004-01-01	66766118542.6188050
2004-04-01	28510699543.7369000
2004-07-01	53116798828.6849000
2004-10-01	53185760815.5575000
2005-01-01	78461294606.7720000
2005-04-01	46831975657.9990000
2005-07-01	65396917650.2754000
2005-10-01	52700198117.8189000
2006-01-01	79583568726.5889000
2006-04-01	38758399822.6753000
2006-07-01	65123681055.0437000
2006-10-01	62322028114.4645000
2007-01-01	83724329057.6906000
2007-04-01	35680412241.7328000
2007-07-01	86481131804.9152000
2007-10-01	94703939446.7402000
2008-01-01	112996322851.0940000
2008-04-01	43608448416.0525050
2008-07-01	93381440624.8917000
2008-10-01	47237833139.9548950
2009-01-01	93408489272.7393000
2009-04-01	43542109995.7978000
2009-07-01	107184541172.5140000
2009-10-01	107316304557.5330000
2010-01-01	120635607347.4420000
2010-04-01	73458390817.8828000
2010-07-01	118735694394.9260000
2010-10-01	123338312627.3100100
2011-01-01	141085123711.2190000
2011-04-01	114327771468.1600000
2011-07-01	148279811460.1699800
2011-10-01	143518309362.7400000
2012-01-01	137843909410.1120000
2012-04-01	92273021395.2106000
2012-07-01	123684726702.5690000
2012-10-01	115961484236.8750000
2013-01-01	108337480138.2000000
2013-04-01	97701511074.2146900
2013-07-01	119994937280.0540000
2013-10-01	125373367669.4850000
2014-01-01	128192810360.9959900
2014-04-01	79288378020.8345000
2014-07-01	126148320699.7050000
2014-10-01	121482241823.0200000
2015-01-01	117132478085.8199900
2015-04-01	78979897037.8269000
2015-07-01	112179516700.6890000
2015-10-01	107641215478.6700000
2016-01-01	102286001819.6870000
2016-04-01	67692101337.2424100
2016-07-01	114771269043.5750000
2016-10-01	127302550244.8479900
2017-01-01	127062892685.0550100
2017-04-01	84035096052.4108900
2017-07-01	147519416934.4890000
2017-10-01	137979870580.4240000
2018-01-01	141507952444.6399800