Quarter	US Dollars, sum over component sub-periods
1996-01-01	21930463186.04360000
1996-04-01	7012591405.83256000
1996-07-01	4867628995.05940000
1996-10-01	2986032397.56186000
1997-01-01	3744016985.55685000
1997-04-01	3743993141.22888040
1997-07-01	3677335971.13432030
1997-10-01	-4546186776.60757100
1998-01-01	3511273053.73706000
1998-04-01	-17655203007.21140000
1998-07-01	3732626958.87929000
1998-10-01	3556406443.79238000
1999-01-01	9329819886.67290000
1999-04-01	25273255017.11210000
1999-07-01	24591475562.13549800
1999-10-01	17794086455.90570000
2000-01-01	19434813609.22960000
2000-04-01	17084524466.23820000
2000-07-01	6759616623.67071100
2000-10-01	5719453375.73172000
2001-01-01	2164386059.83302000
2001-04-01	4335831613.81913000
2001-07-01	24728982815.88480000
2001-10-01	9218745506.60875000
2002-01-01	3780042038.26463000
2002-04-01	30588867103.32840000
2002-07-01	8590523324.25219000
2002-10-01	3209749082.08423000
2003-01-01	24400555216.32320000
2003-04-01	41879132903.11010000
2003-07-01	58429704576.62440000
2003-10-01	62493571404.08700000
2004-01-01	146061241415.67100000
2004-04-01	4875127636.98461000
2004-07-01	5210272324.99961950
2004-10-01	4810788300.13625000
2005-01-01	5373949897.58503100
2005-04-01	5623943555.93831000
2005-07-01	6086307222.15327000
2005-10-01	5226481984.05631900
2006-01-01	7365682211.05464000
2006-04-01	8341036233.16384000
2006-07-01	7880102303.09751000
2006-10-01	8384365199.34589000
2007-01-01	9101330932.13147000
2007-04-01	8745019722.21797000
2007-07-01	9142834620.90801000
2007-10-01	9531557984.14423000
2008-01-01	8296252387.42789900
2008-04-01	7244928318.51158000
2008-07-01	8213819152.52094100
2008-10-01	7130838424.01787000
2009-01-01	1588544725.78970980
2009-04-01	2693081045.95997000
2009-07-01	17896819806.63420000
2009-10-01	4922616623.39371000
2010-01-01	236060796.42888000
2010-04-01	7740696440.64477900
2010-07-01	29176513465.00820000
2010-10-01	6739391518.44259900
2011-01-01	17414049863.22990000
2011-04-01	3373198567.66093000
2011-07-01	51947430466.20950000
2011-10-01	104056962875.49400000
2012-01-01	-10887323366.40930000
2012-04-01	-15859476004.21310000
2012-07-01	-4501332858.45103000
2012-10-01	-6943261216.37106000
2013-01-01	-2223920034.80363040
2013-04-01	13806699821.66700000
2013-07-01	24608139632.67890000
2013-10-01	2567900396.93633000
2014-01-01	6160351587.85901900
2014-04-01	-1757534660.94039000
2014-07-01	2767968163.30466000
2014-10-01	1293549393.86887000
2015-01-01	299174224.94163996
2015-04-01	2003313110.53960010
2015-07-01	1736390267.78817990
2015-10-01	1106038801.51639000
2016-01-01	156789552.36749800
2016-04-01	-809461693.46311400
2016-07-01	-1179858507.55197000
2016-10-01	-3546036535.48168000
2017-01-01	10257604307.33190000
2017-04-01	4723506192.04385000
2017-07-01	8583675941.95180900
2017-10-01	68341584.95860320
2018-01-01	7249847076.86158900
2018-04-01	7813480744.16331000
2018-07-01	11220698033.59800100