Quarter	US Dollars, sum over component sub-periods
2006-01-01	-4938410036.5800010
2006-04-01	5176877575.8300000
2006-07-01	3521113401.0699997
2006-10-01	6837176446.6000000
2007-01-01	5748580269.2920000
2007-04-01	8746208529.4600010
2007-07-01	3878622180.8900000
2007-10-01	8515351629.9999990
2008-01-01	7199840066.3000000
2008-04-01	3641643122.0000000
2008-07-01	7046735368.8000000
2008-10-01	-1149125078.3000000
2009-01-01	3188397337.2999997
2009-04-01	3289713155.6000000
2009-07-01	2688679275.9000000
2009-10-01	964121621.0000000
2010-01-01	3221856668.6000000
2010-04-01	3688961602.3970003
2010-07-01	3691172881.0000000
2010-10-01	1938481678.2100000
2011-01-01	3986233381.3400000
2011-04-01	5462831182.6000000
2011-07-01	2577443410.0200000
2011-10-01	4331588744.5999990
2012-01-01	3859760496.9000000
2012-04-01	4653730197.0999990
2012-07-01	561357777.4300001
2012-10-01	1570444894.1000001
2013-01-01	-1864731330.7200000
2013-04-01	1086722890.9700000
2013-07-01	-1724028218.2910001
2013-10-01	-4074917080.8090000
2014-01-01	-2679942152.9400000
2014-04-01	5061140550.1100000
2014-07-01	-1182591136.6000001
2014-10-01	3145630912.6350000
2015-01-01	2487035899.5580000
2015-04-01	5558233170.5760000
2015-07-01	1276715998.6490002
2015-10-01	-4471378008.0560000
2016-01-01	5608404331.1200000
2016-04-01	5978727318.4000000
2016-07-01	1291275173.1999998
2016-10-01	6395889387.2000000
2017-01-01	13308522925.5000000
2017-04-01	1194881333.8000000
2017-07-01	8218246650.4000010
2017-10-01	11021065210.1000000
2018-01-01	13347690475.0000000
2018-04-01	12169054005.3000010