Quarter	US Dollars, sum over component sub-periods
1999-01-01	11798644668.2247000
1999-04-01	-3842343756.4686303
1999-07-01	28487061894.1221000
1999-10-01	-9422953464.4542000
2000-01-01	60119464324.2462000
2000-04-01	25717232172.1362000
2000-07-01	29172709031.8599970
2000-10-01	51604088801.8795000
2001-01-01	131432355032.8199900
2001-04-01	-9283337216.0825800
2001-07-01	56853092312.1145000
2001-10-01	64030286972.5964000
2002-01-01	-13912984197.9910000
2002-04-01	75879235784.1157000
2002-07-01	45524109910.8418000
2002-10-01	111640110242.6550000
2003-01-01	136530729503.1620000
2003-04-01	144111695934.3580000
2003-07-01	-99030802180.8049000
2003-10-01	98423955780.0311000
2004-01-01	229586266239.5230000
2004-04-01	35043738949.4797060
2004-07-01	53204801270.6175000
2004-10-01	101917071475.7950000
2005-01-01	252187325429.6559800
2005-04-01	219465432710.8600200
2005-07-01	127825644788.3870000
2005-10-01	133653072227.5289900
2006-01-01	252499042361.4430000
2006-04-01	156748647779.0030000
2006-07-01	205571352161.1110000
2006-10-01	378319814721.0030000
2007-01-01	468805011643.8420000
2007-04-01	324021499894.7570000
2007-07-01	333448560084.6450000
2007-10-01	110548186100.0700000
2008-01-01	445676263601.6980000
2008-04-01	-161791728943.4399700
2008-07-01	105270068781.8510000
2008-10-01	-346888956355.1470300
2009-01-01	-268657011230.5060000
2009-04-01	-96336712180.3069000
2009-07-01	-100723287449.2099900
2009-10-01	-47828263985.1447000
2010-01-01	121195971257.1540000
2010-04-01	21123891931.1409000
2010-07-01	45485333855.4925000
2010-10-01	40007019081.1710000
2011-01-01	169950230255.7750000
2011-04-01	186699872270.1640000
2011-07-01	158850206094.1500000
2011-10-01	-238080880487.3710000
2012-01-01	122492333544.9630000
2012-04-01	38058957267.2869950
2012-07-01	-26044303815.7291030
2012-10-01	-130610952496.5540000
2013-01-01	36511737743.0986000
2013-04-01	76700652963.0916000
2013-07-01	-16060851928.4779990
2013-10-01	-32346866958.6473000
2014-01-01	293368976590.5500000
2014-04-01	73950558935.9356000
2014-07-01	35130320881.3784000
2014-10-01	-114413150316.3030000
2015-01-01	233749863505.2910000
2015-04-01	-175420277192.3209800
2015-07-01	-54101866919.1572950
2015-10-01	-261975643490.1320000
2016-01-01	112207157527.2710000
2016-04-01	186053249151.6140000
2016-07-01	26994062908.0889000
2016-10-01	-38156755852.0877000
2017-01-01	257033683447.5990000
2017-04-01	5164552557.6351500
2017-07-01	45940199785.7953000
2017-10-01	-52339478040.7885000
2018-01-01	232177992680.6429700
2018-04-01	134611199896.2980000