Quarter	US Dollars, sum over component sub-periods
2000-01-01	67036097296.79170000
2000-04-01	-35903412602.28260000
2000-07-01	40569165731.48320000
2000-10-01	24635471031.94250000
2001-01-01	34423352673.91490000
2001-04-01	-19755411947.18960000
2001-07-01	-39068269347.47860000
2001-10-01	17445539689.48190000
2002-01-01	27185187756.22540300
2002-04-01	-3266645855.39491000
2002-07-01	-20247202871.00370000
2002-10-01	33830281211.75870000
2003-01-01	668881549.36404200
2003-04-01	9541788870.75815000
2003-07-01	-12336678892.79940000
2003-10-01	13186622125.74779900
2004-01-01	60445577754.50730000
2004-04-01	-6800720760.50742000
2004-07-01	-38879065400.37450400
2004-10-01	10877026728.68420000
2005-01-01	12228178683.64149900
2005-04-01	54048451302.13280500
2005-07-01	56970159397.70950000
2005-10-01	-42296066208.72280000
2006-01-01	89169009039.23650000
2006-04-01	11290398964.79679900
2006-07-01	16024715861.31380000
2006-10-01	-61487999442.84500000
2007-01-01	226162458468.41400000
2007-04-01	-22536945738.91449700
2007-07-01	-6536553186.02170900
2007-10-01	94723807847.64420000
2008-01-01	-30400348145.58420000
2008-04-01	-162975026454.46298000
2008-07-01	8905672143.54461100
2008-10-01	-81617517088.10410000
2009-01-01	3123903382.56222000
2009-04-01	20023511561.10390000
2009-07-01	-76463827213.56920000
2009-10-01	-5020489545.69351000
2010-01-01	7586700598.08023900
2010-04-01	17725010176.36300300
2010-07-01	-34932895123.12670000
2010-10-01	18674544472.01710000
2011-01-01	-19968591340.12910000
2011-04-01	-5680235951.09545000
2011-07-01	102097442425.82500000
2011-10-01	-374220456.94126800
2012-01-01	8569224656.53572000
2012-04-01	51669375843.30270400
2012-07-01	61242942644.29200000
2012-10-01	-35965920463.30540500
2013-01-01	31366462140.62320000
2013-04-01	-29844735624.07130000
2013-07-01	20224380062.39640000
2013-10-01	10328415016.03200000
2014-01-01	-26285838170.73670200
2014-04-01	-17999316716.38180000
2014-07-01	3024339034.89218000
2014-10-01	-1576654082.49418020
2015-01-01	50460502006.93900000
2015-04-01	-10157643383.19349900
2015-07-01	19231413301.14010000
2015-10-01	18070460467.38780000
2016-01-01	-43145848351.58610000
2016-04-01	46005939128.67360000
2016-07-01	22485630421.19270300
2016-10-01	17651400999.33820000
2017-01-01	-5919590.09172599
2017-04-01	8018844573.03965950
2017-07-01	443289022.99890900
2017-10-01	-565706667.93239900
2018-01-01	17573609124.79540000
2018-04-01	-30607750166.42850000