Quarter	US Dollars, sum over component sub-periods
2005-01-01	12714022409.1713000
2005-04-01	-22013444571.9675000
2005-07-01	36898124845.1114040
2005-10-01	9118628198.7158720
2006-01-01	9754253843.3310600
2006-04-01	27608272624.3980000
2006-07-01	-6324774509.8039210
2006-10-01	-2124322092.3344302
2007-01-01	31812244670.8066020
2007-04-01	22935590363.8961000
2007-07-01	-5732026516.6803900
2007-10-01	-4191139211.6583200
2008-01-01	-24067393221.5467000
2008-04-01	10956643743.5103000
2008-07-01	-2447933901.5728300
2008-10-01	-8446807268.0761310
2009-01-01	-28970170357.4734000
2009-04-01	-21396468263.4832000
2009-07-01	-12690252345.6412000
2009-10-01	18702138382.2286000
2010-01-01	4487119965.4541290
2010-04-01	42672999554.9395000
2010-07-01	-27499526047.6808000
2010-10-01	1882490671.2474000
2011-01-01	22246563411.5980000
2011-04-01	-6152077130.4647400
2011-07-01	40992432519.9401000
2011-10-01	-32308024337.7242000
2012-01-01	24319514050.3348000
2012-04-01	-5907634076.7142900
2012-07-01	-2250937895.5313800
2012-10-01	-26176999838.2366000
2013-01-01	-5598267947.3877400
2013-04-01	18086500581.3241000
2013-07-01	-7126716800.5947490
2013-10-01	9330279814.6190800
2014-01-01	4124824609.7875800
2014-04-01	-1906387185.0172500
2014-07-01	-2396995633.8531103
2014-10-01	34458224895.8371000
2015-01-01	10540009867.7917000
2015-04-01	-5650524200.6631100
2015-07-01	23539194310.9731000
2015-10-01	-30672149273.3509000
2016-01-01	10334875435.3832990
2016-04-01	9570356577.4565800
2016-07-01	-2606113717.8559804
2016-10-01	-8278898712.3949900
2017-01-01	23151555887.0321000
2017-04-01	-23038334763.1045000
2017-07-01	6099920660.8294500
2017-10-01	-7807114123.3732100
2018-01-01	-371662474.4628310
2018-04-01	3618072480.6509600