Quarter	US Dollars, sum over component sub-periods
2005-01-01	9951294540.77372000
2005-04-01	8049393422.43084000
2005-07-01	12040031982.86780000
2005-10-01	-8876032044.72214000
2006-01-01	23409639781.28880000
2006-04-01	20741653156.71349700
2006-07-01	19337204901.96080000
2006-10-01	13172667248.71030000
2007-01-01	28192210691.97590000
2007-04-01	986512769.10706390
2007-07-01	28139702734.75069800
2007-10-01	-10808901679.35580000
2008-01-01	-11134284162.38850000
2008-04-01	7550448533.54212950
2008-07-01	21761851483.68360000
2008-10-01	11959704347.06570000
2009-01-01	-31174425612.83320200
2009-04-01	-34598229917.90050000
2009-07-01	-9236611301.57523200
2009-10-01	-19358335245.73570000
2010-01-01	3326189745.65747000
2010-04-01	18871330971.71850200
2010-07-01	-18915897468.72530000
2010-10-01	2034865095.42599990
2011-01-01	16034181005.70450000
2011-04-01	-13628263423.27750000
2011-07-01	30294589657.07880000
2011-10-01	-46024039186.40800500
2012-01-01	10208075827.22729900
2012-04-01	-4200445068.41711950
2012-07-01	5446046942.03617000
2012-10-01	-17402480202.54549800
2013-01-01	-287113427.98458500
2013-04-01	24459232640.85690000
2013-07-01	807516458.47413790
2013-10-01	11143010458.95270000
2014-01-01	6380965001.08894000
2014-04-01	-10304483957.72430000
2014-07-01	-1882141213.56731990
2014-10-01	31569350542.16690000
2015-01-01	10216501931.37530000
2015-04-01	11315105394.08829900
2015-07-01	35173111691.05700000
2015-10-01	-24237771140.61940000
2016-01-01	1364134622.05981000
2016-04-01	15751726910.56610000
2016-07-01	-11353681973.05520000
2016-10-01	128617688.85503198
2017-01-01	12820917879.56570000
2017-04-01	-7620384912.54484000
2017-07-01	1330715975.84835980
2017-10-01	-852816268.59033500
2018-01-01	1773750869.03040000
2018-04-01	849527760.29354100