Quarter	US Dollars, sum over component sub-periods
2002-01-01	-8434313834.2971800
2002-04-01	2236502586.6173300
2002-07-01	-4745509000.4512410
2002-10-01	-7414660940.5165900
2003-01-01	-3919756664.8442698
2003-04-01	2082884322.1448002
2003-07-01	-21425080365.4193000
2003-10-01	-2262123196.6417300
2004-01-01	6740432850.4339000
2004-04-01	4930300692.0015300
2004-07-01	-9557423660.1669100
2004-10-01	-17922797623.3877030
2005-01-01	10266658953.5865000
2005-04-01	-14181153131.7058000
2005-07-01	12890734208.2051000
2005-10-01	9785097583.3407200
2006-01-01	-22820772726.0867000
2006-04-01	-22415539276.2548000
2006-07-01	7989739818.2922500
2006-10-01	17933277371.4448000
2007-01-01	-3798301046.3422003
2007-04-01	-30238079254.2347000
2007-07-01	23775309920.3222000
2007-10-01	-17463770326.2883000
2008-01-01	-11386376590.0532000
2008-04-01	-32814154339.9519000
2008-07-01	-32851255172.4683000
2008-10-01	-43596048845.9939040
2009-01-01	-6453253535.0369300
2009-04-01	-35433269450.8051000
2009-07-01	32855402817.8782040
2009-10-01	36468146820.7458040
2010-01-01	43523667381.6137000
2010-04-01	-17612985205.5789030
2010-07-01	-38541570393.5774000
2010-10-01	124129666124.2150000
2011-01-01	13744717864.9052010
2011-04-01	42768715536.3096000
2011-07-01	-22687440437.3289000
2011-10-01	10379812249.0165000
2012-01-01	-45222692896.1459000
2012-04-01	20485590563.8637000
2012-07-01	20130433646.4533000
2012-10-01	2172523196.3357600
2013-01-01	2364534495.8849600
2013-04-01	-10491177191.0387000
2013-07-01	-10867070451.2357000
2013-10-01	-20720233777.0455000
2014-01-01	11242149270.4055000
2014-04-01	16206895289.4328000
2014-07-01	-2072878338.7760500
2014-10-01	-32464715.7942145
2015-01-01	51167785795.3602000
2015-04-01	-4915276144.8078900
2015-07-01	17772706744.6793980
2015-10-01	86183887227.7188900
2016-01-01	-20581249787.9779970
2016-04-01	15128125725.3399000
2016-07-01	-33326637295.3984030
2016-10-01	-6503845541.7147200
2017-01-01	-19750100832.0257000
2017-04-01	34032597720.6175000
2017-07-01	-7031675217.1176405
2017-10-01	51462227458.3145000
2018-01-01	-34132075828.7498970
2018-04-01	11376030574.2244000