Quarter	US Dollars, sum over component sub-periods
1999-01-01	401712723640.5930000
1999-04-01	549412120713.5130000
1999-07-01	315205165522.0880000
1999-10-01	510085861400.9460000
2000-01-01	903036773283.0200000
2000-04-01	610326006624.7900000
2000-07-01	578615338606.4940000
2000-10-01	648137364075.1539000
2001-01-01	1035056474438.1000000
2001-04-01	370093680695.6399500
2001-07-01	80258562765.7032000
2001-10-01	380083667569.0800000
2002-01-01	245330954462.4750000
2002-04-01	491477600272.3180000
2002-07-01	397215532177.6890000
2002-10-01	467477992502.1860000
2003-01-01	801897398880.4070000
2003-04-01	690373854231.7550000
2003-07-01	314515781868.2190600
2003-10-01	581611108835.1050000
2004-01-01	1330060831165.9500000
2004-04-01	696346584072.2560000
2004-07-01	740809497249.0290000
2004-10-01	950803049741.5879000
2005-01-01	1170087294714.9200000
2005-04-01	1123223829129.8300000
2005-07-01	1033321723413.7000000
2005-10-01	956473325757.2780000
2006-01-01	1763219068029.9500000
2006-04-01	874045553357.6440000
2006-07-01	1194952254519.0800000
2006-10-01	1198747087312.7200000
2007-01-01	2349282348147.7603000
2007-04-01	1936781051502.6600000
2007-07-01	1070949357206.9400000
2007-10-01	1065761018475.7100000
2008-01-01	1687914895165.4600000
2008-04-01	-334310337228.8210000
2008-07-01	199413330066.6089800
2008-10-01	-1282123224979.9700000
2009-01-01	-237232753817.5140000
2009-04-01	4808415954.2033500
2009-07-01	381376044181.2450000
2009-10-01	-4184670950.4378495
2010-01-01	892774930597.1670000
2010-04-01	498692075875.6260000
2010-07-01	1308314474085.7800000
2010-10-01	440741991661.9570000
2011-01-01	1105306521877.8800000
2011-04-01	476582913470.7790000
2011-07-01	727104537687.8580000
2011-10-01	-364920894054.7460300
2012-01-01	797708259987.0160000
2012-04-01	-110181669556.5800000
2012-07-01	319730274708.6800000
2012-10-01	183717286334.0700000
2013-01-01	429875023919.6950000
2013-04-01	442881145267.7240000
2013-07-01	-58036844718.3446960
2013-10-01	322286280569.1250000
2014-01-01	854112472176.6070000
2014-04-01	747706198079.0331000
2014-07-01	679863545006.2630000
2014-10-01	149079952886.7320000
2015-01-01	1082493211249.1001000
2015-04-01	-72927742553.3015000
2015-07-01	140404019262.8710000
2015-10-01	-218050097093.3380000
2016-01-01	609412778731.1700000
2016-04-01	1007197730762.6200000
2016-07-01	456977592544.6900000
2016-10-01	-65618240513.0013050
2017-01-01	1151666263883.2400000
2017-04-01	638701355411.0600000
2017-07-01	881161007552.4840000
2017-10-01	342674742617.8270000
2018-01-01	1127676699822.4800000