Quarter	US Dollars, sum over component sub-periods
2002-01-01	26320795825.3846000
2002-04-01	26987928211.1262000
2002-07-01	739733586.5717291
2002-10-01	6021810800.0012600
2003-01-01	-8411057286.1870700
2003-04-01	1540268932.1199500
2003-07-01	2283958097.9455000
2003-10-01	23387529025.2976000
2004-01-01	13844159242.1138000
2004-04-01	23934984585.1464000
2004-07-01	-22831052605.4519000
2004-10-01	32646728803.3578000
2005-01-01	17028102527.6859990
2005-04-01	-3182774202.6307500
2005-07-01	18864459341.2540000
2005-10-01	9237754391.5071200
2006-01-01	9134804737.7330200
2006-04-01	22253149728.3922000
2006-07-01	32867964719.0199970
2006-10-01	36039917840.8786000
2007-01-01	38909968985.9501000
2007-04-01	17260799659.8926000
2007-07-01	-824925312.5419000
2007-10-01	22124417745.3613000
2008-01-01	-5285675869.6984000
2008-04-01	31956584447.4097000
2008-07-01	-1799411457.3197901
2008-10-01	-36463129002.5705950
2009-01-01	-18441212823.7124020
2009-04-01	-9830999352.9867500
2009-07-01	-23863759206.3504030
2009-10-01	-30211443788.6960000
2010-01-01	21965939529.3211000
2010-04-01	61600338849.7262000
2010-07-01	-1141139612.2968500
2010-10-01	32097913052.8085020
2011-01-01	-2403582413.8568900
2011-04-01	50536602386.3672000
2011-07-01	75021892753.0866100
2011-10-01	44875442183.0207000
2012-01-01	87869774817.6940000
2012-04-01	173012513783.7470000
2012-07-01	-2455144577.2574997
2012-10-01	187868748732.5980000
2013-01-01	-29864123462.8149000
2013-04-01	143971914749.8730000
2013-07-01	116619667186.4020100
2013-10-01	44085111463.2285000
2014-01-01	-9230266406.9464020
2014-04-01	68625965111.6807900
2014-07-01	33448176798.1544040
2014-10-01	8232302739.6637100
2015-01-01	-35297250426.0119000
2015-04-01	58247791992.3532000
2015-07-01	25762476143.1914020
2015-10-01	22185301104.0614000
2016-01-01	11354184176.7029000
2016-04-01	50516670332.8212050
2016-07-01	17439965656.2573000
2016-10-01	53933645583.9940950
2017-01-01	94624667072.3702000
2017-04-01	-9425088462.2941400
2017-07-01	-6134364399.3661995
2017-10-01	45597012490.1225000
2018-01-01	21692147705.8179000
2018-04-01	-287080980.9830440