Quarter	US Dollars, sum over component sub-periods
2004-01-01	-4270952423.39499950
2004-04-01	-2832982499.08212000
2004-07-01	-2040246097.18328000
2004-10-01	1948198762.00675000
2005-01-01	-2171509151.68986030
2005-04-01	-514997932.04797596
2005-07-01	-1349876192.07374000
2005-10-01	-3009478412.98793000
2006-01-01	-2831646341.87819000
2006-04-01	-2144723509.13824990
2006-07-01	377853026.81109905
2006-10-01	-6091776986.79063000
2007-01-01	-5019899612.04340100
2007-04-01	-8242106098.19278050
2007-07-01	-4582825259.91944000
2007-10-01	-7189036402.99928950
2008-01-01	-7419012266.17414950
2008-04-01	-9667350905.26850900
2008-07-01	-10129953209.13780000
2008-10-01	-13839424158.25800000
2009-01-01	-3041906939.35813000
2009-04-01	-1905410940.13402990
2009-07-01	-6780886975.28545000
2009-10-01	-8353217706.25532100
2010-01-01	-7104731815.96361000
2010-04-01	-3445111276.73489000
2010-07-01	-9895297949.21378000
2010-10-01	-10590027953.34020000
2011-01-01	-8267543592.77794000
2011-04-01	-8159568306.56472000
2011-07-01	-6731372384.49151000
2011-10-01	-4332092550.37856000
2012-01-01	-6437457986.45225050
2012-04-01	-138363313.15031000
2012-07-01	-3491632404.96709000
2012-10-01	-1433699981.62563000
2013-01-01	-4031504808.07491000
2013-04-01	1568975975.67029000
2013-07-01	-856648199.18448300
2013-10-01	-2695817312.47004030
2014-01-01	-3652195477.86403040
2014-04-01	-380784773.26320500
2014-07-01	-2495596127.57934000
2014-10-01	182879944.81255200
2015-01-01	2236017894.49548000
2015-04-01	515309441.80864110
2015-07-01	1021731530.25333000
2015-10-01	-3023996099.18015000
2016-01-01	-657051549.14520600
2016-04-01	788483358.31677100
2016-07-01	-2255437035.20352000
2016-10-01	3530968097.16184000
2017-01-01	541309900.96472310
2017-04-01	-1020260759.05638000
2017-07-01	-666381709.52016700
2017-10-01	-239288479.93275902
2018-01-01	343435819.31555000
2018-04-01	1958695330.31710980