Quarter	US Dollars, sum over component sub-periods
2004-01-01	3400700000.0000000
2004-04-01	442670000.0000000
2004-07-01	608190000.0000000
2004-10-01	906910000.0000000
2005-01-01	2587400000.0000000
2005-04-01	1781200000.0000000
2005-07-01	2788900000.0000000
2005-10-01	7399760000.0000000
2006-01-01	8170580000.0000000
2006-04-01	-768590000.0000000
2006-07-01	4368860000.0000000
2006-10-01	3447680000.0000000
2007-01-01	6449160000.0000000
2007-04-01	7577180000.0000000
2007-07-01	6303520000.0000000
2007-10-01	6048960000.0000000
2008-01-01	6346600000.0000000
2008-04-01	4726130000.0000000
2008-07-01	3192500000.0000000
2008-10-01	2090960000.0000000
2009-01-01	5409150000.0000000
2009-04-01	4562350000.0000000
2009-07-01	11099250000.0000000
2009-10-01	8392090000.0000000
2010-01-01	10867180000.0000000
2010-04-01	6110020000.0000000
2010-07-01	11987950000.0000000
2010-10-01	9894590000.0000000
2011-01-01	11912500000.0000000
2011-04-01	13173230000.0000000
2011-07-01	7623450000.0000000
2011-10-01	-3941470000.0000000
2012-01-01	4724240000.0000000
2012-04-01	1197170000.0000000
2012-07-01	3738620000.0000000
2012-10-01	8846680000.0000000
2013-01-01	3238200000.0000000
2013-04-01	-4172439999.9999995
2013-07-01	2552570000.0000000
2013-10-01	7203140000.0000000
2014-01-01	7837830000.0000000
2014-04-01	7275490000.0000000
2014-07-01	10293450000.0000000
2014-10-01	1225020000.0000000
2015-01-01	9708990000.0000000
2015-04-01	6462020000.0000000
2015-07-01	-892630000.0000000
2015-10-01	5758830000.0000000
2016-01-01	670360000.0000000
2016-04-01	7125080000.0000000
2016-07-01	2810790000.0000000
2016-10-01	-13819670000.0000000
2017-01-01	9079200000.0000000
2017-04-01	8884310000.0000000
2017-07-01	9277430000.0000000
2017-10-01	3063710000.0000000
2018-01-01	764640000.0000000
2018-04-01	-2880510000.0000000