Quarter	US Dollars, sum over component sub-periods
1999-01-01	-3212832344.1530400
1999-04-01	2478079237.8765000
1999-07-01	1477782721.1926000
1999-10-01	2124964745.3600101
2000-01-01	5311186176.6179000
2000-04-01	-1081248144.7054698
2000-07-01	-2165315907.0454097
2000-10-01	3618285680.5415600
2001-01-01	1323725349.5278200
2001-04-01	1199388993.1094599
2001-07-01	3209524962.9260902
2001-10-01	3174778710.0542100
2002-01-01	4121735813.8815400
2002-04-01	-629292236.8512510
2002-07-01	1873532698.1177099
2002-10-01	-5812613152.8372400
2003-01-01	-94899484.8881860
2003-04-01	-381886736.7099750
2003-07-01	100296040.6737030
2003-10-01	-1498562912.9717500
2004-01-01	-2068122867.4579100
2004-04-01	12679672281.0602000
2004-07-01	4763061561.0667000
2004-10-01	-3512483340.6199700
2005-01-01	-2809623812.4795100
2005-04-01	-91871299.6409826
2005-07-01	-3830940110.8420300
2005-10-01	10305561252.9329990
2006-01-01	3400591650.4571000
2006-04-01	4882495647.2698310
2006-07-01	-9217636406.2519100
2006-10-01	16092584359.3140000
2007-01-01	929187418.5511620
2007-04-01	-4292147769.2230600
2007-07-01	1490090089.5548500
2007-10-01	15415943030.1301000
2008-01-01	7767756145.5853900
2008-04-01	17070327035.8656000
2008-07-01	-8845756773.2293000
2008-10-01	635277725.6976329
2009-01-01	6594418456.1158600
2009-04-01	-8379432347.8130990
2009-07-01	-8858900288.7232110
2009-10-01	23413241346.2492000
2010-01-01	-18113943443.4088000
2010-04-01	42527589023.6892000
2010-07-01	-30190573722.3419000
2010-10-01	43880675798.9234000
2011-01-01	33216880035.7762000
2011-04-01	-3033318794.9780397
2011-07-01	71416159827.7190100
2011-10-01	14609477954.2783000
2012-01-01	11677851632.6876000
2012-04-01	26108452379.4773980
2012-07-01	-1151240066.8078000
2012-10-01	-34636041558.2127000
2013-01-01	-25775669146.1298000
2013-04-01	-8043584115.7585600
2013-07-01	-11939604208.4718990
2013-10-01	8546024555.9965700
2014-01-01	11274232497.8126000
2014-04-01	-4716838679.0454490
2014-07-01	2240377504.7323604
2014-10-01	-11088660813.1010990
2015-01-01	29065211569.1022000
2015-04-01	11210899865.8354000
2015-07-01	-7143767657.5536300
2015-10-01	-36833246284.0440000
2016-01-01	30904938701.1188000
2016-04-01	-10456553274.3634990
2016-07-01	-6799008941.2998800
2016-10-01	-40062869629.9693000
2017-01-01	37825145904.2486950
2017-04-01	-22111015581.6130000
2017-07-01	7083352803.4802900
2017-10-01	-12182596679.5653000
2018-01-01	5380026209.8386000
2018-04-01	1369888498.4668100