Quarter	US Dollars, sum over component sub-periods
2004-01-01	51156607.408300800
2004-04-01	-129555322.878481000
2004-07-01	59862433.367120300
2004-10-01	-105759966.072548000
2005-01-01	178742549.969586000
2005-04-01	80223360.942469300
2005-07-01	271609687.144755960
2005-10-01	156263835.674493000
2006-01-01	114605621.438442000
2006-04-01	48298804.657274306
2006-07-01	175669891.040527020
2006-10-01	1168103961.759549900
2007-01-01	-220991084.106410000
2007-04-01	446105156.421414000
2007-07-01	172450066.925226000
2007-10-01	809032751.508806000
2008-01-01	-1099753055.006390000
2008-04-01	327227506.230741000
2008-07-01	-411793543.982051970
2008-10-01	28092632.860376798
2009-01-01	-346639370.062364000
2009-04-01	185786280.627136980
2009-07-01	-110206389.131981000
2009-10-01	177917936.567432020
2010-01-01	145699840.865073030
2010-04-01	-183596277.847091000
2010-07-01	372639481.471547960
2010-10-01	154704435.944832980
2011-01-01	-35756739.872855000
2011-04-01	-34994108.101062600
2011-07-01	662614718.577804900
2011-10-01	1286315204.313950000
2012-01-01	-476694331.119025000
2012-04-01	-648194986.261504000
2012-07-01	1059793815.440019800
2012-10-01	183250731.808707000
2013-01-01	-1061837998.434549900
2013-04-01	90734894.509921000
2013-07-01	408694270.915720000
2013-10-01	-13200961.728440000
2014-01-01	-528136789.321142000
2014-04-01	857185864.127036000
2014-07-01	239193073.741572980
2014-10-01	1049084244.840330000
2015-01-01	-2061796207.949270000
2015-04-01	1187884209.442439800
2015-07-01	-107045345.120733990
2015-10-01	-497938217.144723000
2016-01-01	898040802.840326100
2016-04-01	-234165815.605265020
2016-07-01	210375374.315324000
2016-10-01	28467793.110023700
2017-01-01	-329917789.026804000
2017-04-01	-905501351.858795000
2017-07-01	618451514.794995000
2017-10-01	2316954202.833309700
2018-01-01	606733746.136045900
2018-04-01	355444373.093488040