Quarter	US Dollars, sum over component sub-periods
2002-01-01	-5613057640.9637790
2002-04-01	11928320333.4759000
2002-07-01	-28537780691.5325000
2002-10-01	10979124724.9068000
2003-01-01	10379899540.5415000
2003-04-01	13505750444.6211010
2003-07-01	-3759694453.9861803
2003-10-01	6087539989.4898100
2004-01-01	27192009000.8324000
2004-04-01	13655439616.7838000
2004-07-01	20913894650.9000000
2004-10-01	18644725326.0348000
2005-01-01	21056453087.1832000
2005-04-01	81896341819.6890000
2005-07-01	13998650771.1070000
2005-10-01	40906826901.1840060
2006-01-01	51853308905.6436000
2006-04-01	24465267408.2550000
2006-07-01	48968016306.2178960
2006-10-01	46890590313.2290950
2007-01-01	20631710481.6157000
2007-04-01	42258222972.4034000
2007-07-01	54564684798.0840000
2007-10-01	61842007867.3555100
2008-01-01	69608216151.3767100
2008-04-01	-7071436982.7658410
2008-07-01	35269964073.0156000
2008-10-01	-25342813717.3073000
2009-01-01	-23400850419.5916000
2009-04-01	-16858005401.1114000
2009-07-01	14799163984.2295020
2009-10-01	37916772186.4387000
2010-01-01	51184209225.7815900
2010-04-01	9779203098.0546400
2010-07-01	50089954963.7752000
2010-10-01	-7125932151.8625200
2011-01-01	93166846659.5280000
2011-04-01	52793420355.7743000
2011-07-01	70204270972.3940900
2011-10-01	-44141148611.4068000
2012-01-01	22874940035.5953980
2012-04-01	-7294024358.5137100
2012-07-01	7855962108.0645300
2012-10-01	-70880840436.7228100
2013-01-01	39861934777.1677000
2013-04-01	18924082845.5310970
2013-07-01	-8792736915.5659100
2013-10-01	-49506427309.9061050
2014-01-01	61151371503.7786000
2014-04-01	-5586504053.5704700
2014-07-01	12065079097.7067010
2014-10-01	11632357397.6500990
2015-01-01	52832739818.0064000
2015-04-01	-89784531127.5708900
2015-07-01	59940501798.9382000
2015-10-01	-17575126814.2611000
2016-01-01	34809799362.9377000
2016-04-01	-4944843065.7060100
2016-07-01	19806730462.5099000
2016-10-01	-4407012635.1247800
2017-01-01	27764155774.4409000
2017-04-01	17633823617.7858000
2017-07-01	7106842615.4633100
2017-10-01	-16214416806.2647000
2018-01-01	39915173897.1602000
2018-04-01	36281794683.7409060