Quarter	US Dollars, sum over component sub-periods
2004-01-01	5505534851.67176100
2004-04-01	4993893036.34806100
2004-07-01	1223981919.39062000
2004-10-01	4381922325.06464000
2005-01-01	3894660555.24836000
2005-04-01	6982810918.78668000
2005-07-01	2822661524.83765030
2005-10-01	3662165696.89618000
2006-01-01	4620021519.88993900
2006-04-01	3251780256.65723000
2006-07-01	4605748147.77928000
2006-10-01	10152514476.11350000
2007-01-01	5181820975.78110000
2007-04-01	4049388731.26603000
2007-07-01	8708964038.73720000
2007-10-01	12884736416.63070000
2008-01-01	13090796420.39140000
2008-04-01	8198753290.14925000
2008-07-01	-6872115271.34366000
2008-10-01	-18303450851.24839800
2009-01-01	-638456983.57151400
2009-04-01	7403417733.08199000
2009-07-01	11401038256.96119900
2009-10-01	507736274.61724800
2010-01-01	12502563794.43279800
2010-04-01	3997518686.89002000
2010-07-01	8412020527.43450100
2010-10-01	4343907125.05695900
2011-01-01	16931490526.85040000
2011-04-01	2711001377.33163000
2011-07-01	-3696302359.89233000
2011-10-01	-1722530500.25259000
2012-01-01	-2255235534.41232970
2012-04-01	5130294611.12226000
2012-07-01	4330617637.59711000
2012-10-01	5180654979.88036000
2013-01-01	3032846016.92296030
2013-04-01	1101674386.24796000
2013-07-01	3177737586.34506030
2013-10-01	-6760200261.90899900
2014-01-01	-31433635.09726980
2014-04-01	10445087596.41690000
2014-07-01	6942473571.75003000
2014-10-01	4149625.97629778
2015-01-01	9940604553.07678000
2015-04-01	8520034976.52147000
2015-07-01	4305508145.81149000
2015-10-01	-1513025222.17811000
2016-01-01	5277379436.06016900
2016-04-01	15608198588.69850000
2016-07-01	1212033920.78693990
2016-10-01	11517241489.69540000
2017-01-01	1655945302.13230000
2017-04-01	-4974129529.52977900
2017-07-01	-190867608.85263100
2017-10-01	6364238838.95582000
2018-01-01	8822007608.66818000
2018-04-01	-5046836889.52868100