Quarter	US Dollars, sum over component sub-periods
2000-01-01	62897276261.2673000
2000-04-01	-31084625359.0360000
2000-07-01	43925188338.4267000
2000-10-01	27767126903.4193000
2001-01-01	10168891498.7388000
2001-04-01	-14385458153.6329000
2001-07-01	-42155045226.3690950
2001-10-01	23080703943.5100020
2002-01-01	21638693955.7824020
2002-04-01	9115646814.7821710
2002-07-01	-17106528633.5704000
2002-10-01	36321693720.3161000
2003-01-01	-4494352482.8580100
2003-04-01	10370771937.3614000
2003-07-01	-16984862696.3723000
2003-10-01	15596278853.2164000
2004-01-01	46982598633.4985000
2004-04-01	-2768505263.6376800
2004-07-01	-37320889525.9951900
2004-10-01	25666993570.6695000
2005-01-01	-773957707.3496870
2005-04-01	66290145258.4490050
2005-07-01	44919824218.5399000
2005-10-01	-33326972712.2809000
2006-01-01	53774769930.6792000
2006-04-01	13150747305.1263000
2006-07-01	11264175477.6127000
2006-10-01	-28358404585.0347000
2007-01-01	210163593700.5890000
2007-04-01	-20771437510.1863980
2007-07-01	-6785851303.6044090
2007-10-01	89974695980.4845000
2008-01-01	-53526564952.1752000
2008-04-01	-154353756171.5359800
2008-07-01	27618698245.3926000
2008-10-01	-154676076899.1540000
2009-01-01	-26425910146.7379000
2009-04-01	-37310840.6513721
2009-07-01	-59013739485.8495000
2009-10-01	-37799361417.9543000
2010-01-01	-25744300530.2238000
2010-04-01	-41534799352.7676000
2010-07-01	-7312709055.5686200
2010-10-01	42157154815.4576000
2011-01-01	-28283300060.3668020
2011-04-01	32500650563.8776000
2011-07-01	17135721722.8860000
2011-10-01	-4340003124.4009200
2012-01-01	24167157466.3141980
2012-04-01	-34653645770.5284960
2012-07-01	7720326693.8347600
2012-10-01	-17918017104.7430000
2013-01-01	32428481666.1783000
2013-04-01	4663981184.8541310
2013-07-01	41359783014.8866000
2013-10-01	-250796570.4200240
2014-01-01	-9867724613.2469700
2014-04-01	-17654774440.8137000
2014-07-01	-1053674590.1312800
2014-10-01	-2506277854.4457000
2015-01-01	-33301816706.5202000
2015-04-01	-4858436220.0150200
2015-07-01	-26106229181.1779000
2015-10-01	20999651381.4153980
2016-01-01	-71636454313.9505900
2016-04-01	22173308588.1895000
2016-07-01	25721879867.5238000
2016-10-01	13306278939.8018990
2017-01-01	-29420188142.1754000
2017-04-01	49882126806.3479000
2017-07-01	-11495773669.0327000
2017-10-01	9218200946.9215010
2018-01-01	-29460319635.2207030
2018-04-01	-37032566921.5436000