Quarter	US Dollars, sum over component sub-periods
2006-01-01	14900000.00000000
2006-04-01	8091200000.00000000
2006-07-01	2794000000.00000000
2006-10-01	-12609900000.00000000
2007-01-01	267500000.00000000
2007-04-01	3719000000.00000000
2007-07-01	2546400000.00000000
2007-10-01	3222400000.00000000
2008-01-01	527299999.99999994
2008-04-01	2544000000.00000000
2008-07-01	5037000000.00000000
2008-10-01	-3283400000.00000000
2009-01-01	-458700000.00000000
2009-04-01	-985500000.00000000
2009-07-01	6648300000.00000000
2009-10-01	912600000.00000000
2010-01-01	-1378900000.00000000
2010-04-01	735900000.00000000
2010-07-01	4449700000.00000000
2010-10-01	12189400000.00000000
2011-01-01	1681400000.00000000
2011-04-01	3516600000.00000000
2011-07-01	-6789500000.00000000
2011-10-01	5476200000.00000000
2012-01-01	-7961500000.00000000
2012-04-01	3089200000.00000000
2012-07-01	-7752000000.00000000
2012-10-01	2905200000.00000000
2013-01-01	-1392800000.00000000
2013-04-01	-2003700000.00000000
2013-07-01	-921800000.00000000
2013-10-01	6116400000.00000000
2014-01-01	-3039500000.00000000
2014-04-01	2479500000.00000000
2014-07-01	2085500000.00000000
2014-10-01	2748300000.00000000
2015-01-01	1866400000.00000000
2015-04-01	-825500000.00000000
2015-07-01	1997100000.00000000
2015-10-01	-3316000000.00000000
2016-01-01	-359000000.00000000
2016-04-01	7996400000.00000000
2016-07-01	-3341400000.00000000
2016-10-01	-7792700000.00000000
2017-01-01	-1248500000.00000000
2017-04-01	2127300000.00000020
2017-07-01	-2453000000.00000000
2017-10-01	-850800000.00000000
2018-01-01	4172899999.99999950
2018-04-01	272700000.00000000