Quarter	US Dollars, sum over component sub-periods
2006-01-01	-6633940000.00000000
2006-04-01	3843010000.00000000
2006-07-01	2529960000.00000000
2006-10-01	3790800000.00000000
2007-01-01	4659690000.00000000
2007-04-01	6339640000.00000000
2007-07-01	-841750000.00000000
2007-10-01	2932140000.00000000
2008-01-01	3534210000.00000000
2008-04-01	-2620940000.00000000
2008-07-01	-49430000.00000000
2008-10-01	-846460000.00000000
2009-01-01	267120000.00000000
2009-04-01	-698720000.00000000
2009-07-01	1811090000.00000000
2009-10-01	-33280000.00000000
2010-01-01	-303600000.00000000
2010-04-01	2104409999.99999980
2010-07-01	1278800000.00000000
2010-10-01	1077740000.00000000
2011-01-01	-1159490000.00000000
2011-04-01	225720000.00000000
2011-07-01	-3153520000.00000000
2011-10-01	-2020620000.00000000
2012-01-01	669800000.00000000
2012-04-01	-698830000.00000000
2012-07-01	-1726490000.00000000
2012-10-01	-1549200000.00000000
2013-01-01	-2583430000.00000000
2013-04-01	-2710690000.00000000
2013-07-01	-2584900000.00000000
2013-10-01	-3944740000.00000000
2014-01-01	-3733120000.00000000
2014-04-01	2184010000.00000000
2014-07-01	-982810000.00000000
2014-10-01	3727030000.00000000
2015-01-01	339100000.00000000
2015-04-01	2300090000.00000000
2015-07-01	-227097474.79999998
2015-10-01	-7318062525.00000000
2016-01-01	3545000000.00000000
2016-04-01	1073800000.00000000
2016-07-01	-569411954.30000010
2016-10-01	10261847450.00000000
2017-01-01	10938213260.00000000
2017-04-01	-2804383050.00000000
2017-07-01	1885219381.00000000
2017-10-01	4536655932.00000000
2018-01-01	6153031211.00000000
2018-04-01	740866617.30000010