Quarter	US Dollars, sum over component sub-periods
1999-01-01	15985586406.6395020
1999-04-01	10921513400.1934000
1999-07-01	14126604482.8168000
1999-10-01	2325899186.4568600
2000-01-01	16942443998.1670990
2000-04-01	12550435150.0232010
2000-07-01	10414951725.1777000
2000-10-01	9084406399.3603600
2001-01-01	8209735944.8655100
2001-04-01	3841260391.7450100
2001-07-01	3955300039.0242900
2001-10-01	4857198257.8073610
2002-01-01	11688975571.5462990
2002-04-01	3472464542.3795400
2002-07-01	3909177224.7819800
2002-10-01	-2829320641.7018700
2003-01-01	22364716840.2215000
2003-04-01	13134313910.1054000
2003-07-01	5474070098.7230010
2003-10-01	47596090.6136811
2004-01-01	31274998352.8952000
2004-04-01	15990001535.3813000
2004-07-01	14958233683.6662000
2004-10-01	250012644.1968120
2005-01-01	113859218725.4120000
2005-04-01	32230465531.5831000
2005-07-01	13818164638.6805000
2005-10-01	2665354395.6955600
2006-01-01	56583102456.9691000
2006-04-01	25008241747.8575970
2006-07-01	7227944312.1437200
2006-10-01	34608124397.6655040
2007-01-01	47377151642.9324950
2007-04-01	61067965057.2583000
2007-07-01	11927045143.8350000
2007-10-01	28816228142.7990000
2008-01-01	42541600430.8634000
2008-04-01	46463417948.3919000
2008-07-01	-563815589.9602000
2008-10-01	-20244306106.8913000
2009-01-01	-2782965586.9846800
2009-04-01	-2774033201.5561700
2009-07-01	9395023105.3952790
2009-10-01	-16180008289.3955000
2010-01-01	25444733278.6415000
2010-04-01	7892233685.2933210
2010-07-01	-8406696690.8165300
2010-10-01	-49876095781.3981000
2011-01-01	51018019211.0750000
2011-04-01	-1406193339.3563700
2011-07-01	-1395020609.4150400
2011-10-01	11849746719.8986990
2012-01-01	9551005462.3196400
2012-04-01	-1369553096.8517300
2012-07-01	-98856483.9976262
2012-10-01	-5925771155.5968290
2013-01-01	9272089231.3524500
2013-04-01	6271459339.1470190
2013-07-01	-553685452.0497970
2013-10-01	-10691548073.2242000
2014-01-01	1847423773.8030798
2014-04-01	11842181886.7537000
2014-07-01	-17934040068.3883000
2014-10-01	-8892834841.7844600
2015-01-01	6519099895.2969200
2015-04-01	-10306152816.6785980
2015-07-01	-2623605924.6539900
2015-10-01	-14140202272.2049000
2016-01-01	-12611719038.4402000
2016-04-01	-2494441272.4696400
2016-07-01	-6377209272.8588300
2016-10-01	-20581503262.4740030
2017-01-01	22646285027.4099000
2017-04-01	4178052633.4020295
2017-07-01	-702345378.2923579
2017-10-01	659409833.8059701
2018-01-01	24640225110.4325000
2018-04-01	-1879725261.3744500