Quarter	US Dollars, sum over component sub-periods
1999-01-01	-6085096826.7953500
1999-04-01	-5676862117.6428795
1999-07-01	25168028.1781311
1999-10-01	664246086.2705901
2000-01-01	1079079965.6195300
2000-04-01	-3090214295.0685800
2000-07-01	-4224720114.1176400
2000-10-01	-9282649571.1687600
2001-01-01	-8796541076.4607490
2001-04-01	-2217724948.6462300
2001-07-01	-2218783366.4934500
2001-10-01	-2916289420.5090900
2002-01-01	3056806496.0238500
2002-04-01	-6123713291.2355400
2002-07-01	4277076641.5078197
2002-10-01	1396651915.0692400
2003-01-01	-11490996450.7143000
2003-04-01	-1534589474.4056400
2003-07-01	-2582257208.8156600
2003-10-01	-16035122927.7492000
2004-01-01	-11622642990.2413000
2004-04-01	2960084704.2207403
2004-07-01	-4750101182.0372095
2004-10-01	-2241045981.6605396
2005-01-01	-5509169080.0671100
2005-04-01	-3873696716.3691000
2005-07-01	-2903631630.4561200
2005-10-01	-9914499885.1040690
2006-01-01	-7094690326.9883300
2006-04-01	2000960992.2395000
2006-07-01	4018640172.1370397
2006-10-01	3151235479.0718100
2007-01-01	2121384567.8224602
2007-04-01	5098433638.9967000
2007-07-01	6048077416.4530310
2007-10-01	-6829472153.1233800
2008-01-01	7088019427.3081400
2008-04-01	143709344.4697280
2008-07-01	-1256589001.0283198
2008-10-01	-1017862802.1824800
2009-01-01	-7503208293.6608800
2009-04-01	2941537415.4940300
2009-07-01	64514971391.5252000
2009-10-01	598056343.6346791
2010-01-01	6496792622.5376300
2010-04-01	-1466372190.1189000
2010-07-01	6490150773.4482100
2010-10-01	2428246213.2727700
2011-01-01	15781883847.0706000
2011-04-01	-6433658369.4196100
2011-07-01	-5236975142.0246910
2011-10-01	9357190559.3742790
2012-01-01	2848384438.3026600
2012-04-01	11668130738.0654000
2012-07-01	566860598.1129711
2012-10-01	3927153639.2544900
2013-01-01	473698595.9948100
2013-04-01	2212380699.8157100
2013-07-01	3181704439.7694097
2013-10-01	2098837317.4935400
2014-01-01	2991784939.3265000
2014-04-01	-401778519.3166780
2014-07-01	-2237119178.3979200
2014-10-01	3857057964.9357200
2015-01-01	6314217114.9577600
2015-04-01	-2757377009.2272897
2015-07-01	2888189911.9708000
2015-10-01	5415559591.7924400
2016-01-01	963265091.2869650
2016-04-01	2531705447.2055000
2016-07-01	8625691632.4057300
2016-10-01	4993177640.8724300
2017-01-01	-2507255854.2086100
2017-04-01	-1603474793.2351000
2017-07-01	641271867.1365010
2017-10-01	2196070250.0859504
2018-01-01	13979711777.7807000
2018-04-01	7845291870.3499100