Quarter	US Dollars, sum over component sub-periods
2002-01-01	25422250.7555755000
2002-04-01	-11954989.1554380990
2002-07-01	24592207.0003899000
2002-10-01	-3001400.9636158500
2003-01-01	-1073523.5847079900
2003-04-01	11358915.4286131990
2003-07-01	18010512.3544248000
2003-10-01	-7139413.5920521610
2004-01-01	-12501498.3222989010
2004-04-01	-12052462.1507359000
2004-07-01	-8558740.8685355000
2004-10-01	-9067816.1107651890
2005-01-01	-9173212.0743267700
2005-04-01	-13843620.4938467000
2005-07-01	-3658502.6843210300
2005-10-01	-42816938.0834629000
2006-01-01	-19246362.3655160000
2006-04-01	17596390.6352720000
2006-07-01	-8921814.5274212710
2006-10-01	-3869712.0086841797
2007-01-01	-10488922.4614213000
2007-04-01	0.0000000000
2007-07-01	-4124626.5627094996
2007-10-01	0.0000000000
2008-01-01	507892324.2142160000
2008-04-01	-164016099.6665370200
2008-07-01	143952916.5855830000
2008-10-01	-324402725.3407390000
2009-01-01	14311650.9849609000
2009-04-01	23150988.9182400000
2009-07-01	369049324.1766110000
2009-10-01	-13290140.9696595000
2010-01-01	0.0000000000
2010-04-01	-13977551.2056394010
2010-07-01	24554532.9939299000
2010-10-01	24431767.3778143000
2011-01-01	17773931.3880202000
2011-04-01	138172528.7392130000
2011-07-01	-9883749.2569891800
2011-10-01	21557242.4694008000
2012-01-01	30162450.3135180000
2012-04-01	-26929414.8257363000
2012-07-01	3754043.6961123900
2012-10-01	-29849482.3869310020
2013-01-01	58057766.6400323960
2013-04-01	-65300492.9107354000
2013-07-01	1324606.3446167400
2013-10-01	80305707.9974832000
2014-01-01	-86341022.0694318000
2014-04-01	37023959.1179192000
2014-07-01	-41060209.9054681000
2014-10-01	-39956573.2851870950
2015-01-01	-43903452.9298187000
2015-04-01	-3318143.2120665303
2015-07-01	-6670184.5542050700
2015-10-01	-2188547.0162830600
2016-01-01	279942028.8179509600
2016-04-01	-22584348.3247591030
2016-07-01	2231744.2774659100
2016-10-01	-39867840.4644539950
2017-01-01	-50081183.6582255000
2017-04-01	-24195092.9020386000
2017-07-01	-18791849.5864176000
2017-10-01	-49455737.5354478060
2018-01-01	-1228877.6175967600
2018-04-01	51221917.7687589000