Quarter	US Dollars, sum over component sub-periods
2003-04-01	9271146772.83408000
2003-07-01	8450307265.29169900
2003-10-01	5118959545.50140000
2004-01-01	12982806007.70740100
2004-04-01	7854589583.63458000
2004-07-01	-9849888062.41744000
2004-10-01	-14847901180.22720000
2005-01-01	10259582475.70060000
2005-04-01	36242598452.89059400
2005-07-01	-4607274380.45495000
2005-10-01	-21779549171.78810000
2006-01-01	-6692922512.60818000
2006-04-01	-507781558.33213496
2006-07-01	-1157286798.69979000
2006-10-01	-3534336967.93155000
2007-01-01	72950455719.18540000
2007-04-01	-24056464380.72350000
2007-07-01	8877571238.47175000
2007-10-01	-28588723978.13939700
2008-01-01	28286156581.60590000
2008-04-01	12198111640.91420000
2008-07-01	-27721433009.55910000
2008-10-01	24445781080.02900000
2009-01-01	-10803995434.46510000
2009-04-01	11192822230.53030000
2009-07-01	31023030010.62920000
2009-10-01	11606723113.50269900
2010-01-01	-30052682039.67460300
2010-04-01	13246906483.52650000
2010-07-01	21259056197.37620000
2010-10-01	10549094225.57630000
2011-01-01	22518203843.13030200
2011-04-01	38465216984.95280000
2011-07-01	-24823742241.01810000
2011-10-01	-16122122711.80310000
2012-01-01	39848531096.80690000
2012-04-01	-27459026650.64240300
2012-07-01	7090137194.05760000
2012-10-01	-24973634329.20490000
2013-01-01	-6834982527.16745000
2013-04-01	27272097859.23950200
2013-07-01	-16845018884.49109800
2013-10-01	-1042613090.27241000
2014-01-01	3771595122.77899030
2014-04-01	15798260481.39060000
2014-07-01	-9786899709.40334000
2014-10-01	14757710614.30080000
2015-01-01	21890937068.54500200
2015-04-01	15137369333.44749800
2015-07-01	-11091405216.21729900
2015-10-01	-32786622850.93659600
2016-01-01	-23342095387.14720000
2016-04-01	16338646795.54699900
2016-07-01	2823156510.99437000
2016-10-01	3995404120.05934000
2017-01-01	27673583421.01650200
2017-04-01	-32666674748.60239800
2017-07-01	29349345582.18680200
2017-10-01	-3938796239.43029980
2018-01-01	16401829562.06390000
2018-04-01	25809890518.50460000