Quarter	US Dollars, sum over component sub-periods
2006-01-01	-8248334167.19036000
2006-04-01	-7364874597.74371050
2006-07-01	-825784437.65510310
2006-10-01	-4060994531.45879000
2007-01-01	-5656184860.20266100
2007-04-01	-1175721763.62059000
2007-07-01	-2536601931.17539000
2007-10-01	-30405062155.41020000
2008-01-01	-5742392479.48306000
2008-04-01	-5345009640.89442000
2008-07-01	1396314723.82031000
2008-10-01	-5816281891.20843000
2009-01-01	-3413466100.81044000
2009-04-01	-3892078352.11389000
2009-07-01	-15576321397.45910000
2009-10-01	-6758627150.78121950
2010-01-01	-3292568507.76130000
2010-04-01	-2424622593.37044000
2010-07-01	-4843191110.96568000
2010-10-01	-8002549892.07190000
2011-01-01	-4254024405.20664020
2011-04-01	-3769165707.55973000
2011-07-01	2332702329.72113000
2011-10-01	-2190740910.90576000
2012-01-01	-17331204055.22440000
2012-04-01	-1897671189.78201000
2012-07-01	-4152319736.22708030
2012-10-01	477692863.95803404
2013-01-01	-3516512180.59125000
2013-04-01	-3475885281.83220960
2013-07-01	-1494130282.79127000
2013-10-01	-4548228435.96624000
2014-01-01	-5023957173.74401000
2014-04-01	-9486413904.02829000
2014-07-01	-16039506173.04760200
2014-10-01	-39677715163.40790000
2015-01-01	-6830465796.69180000
2015-04-01	-40840282843.34210000
2015-07-01	-3639339247.10374000
2015-10-01	-7757077574.91562000
2016-01-01	-11067525872.19270000
2016-04-01	-6095314288.00239000
2016-07-01	-4320208927.65943000
2016-10-01	-7513088042.65962000
2017-01-01	-15686317288.82330000
2017-04-01	-18172670299.33860000
2017-07-01	18551348191.77300000
2017-10-01	-7585339762.84289000