Quarter	US Dollars, sum over component sub-periods
1996-01-01	75451086130.97060
1996-04-01	78490241213.23950
1996-07-01	77804310362.44211
1996-10-01	80374685592.83170
1997-01-01	78291765863.92050
1997-04-01	76346322926.37169
1997-07-01	75044530698.71720
1997-10-01	72163757081.70160
1998-01-01	66720071087.17670
1998-04-01	58985124226.70830
1998-07-01	58483178422.83750
1998-10-01	62392129470.81630
1999-01-01	62792625910.76120
1999-04-01	63455597773.87490
1999-07-01	69111419838.94680
1999-10-01	79193679154.84490
2000-01-01	79227398881.72490
2000-04-01	81827228077.05180
2000-07-01	84060393979.36200
2000-10-01	91005540528.68779
2001-01-01	82472172843.98970
2001-04-01	77018583030.30710
2001-07-01	73716644321.00080
2001-10-01	73151570277.38199
2002-01-01	66668378331.80290
2002-04-01	70858966375.20150
2002-07-01	76358877324.80960
2002-10-01	80489018992.49890
2003-01-01	81168666725.84131
2003-04-01	81897414513.70930
2003-07-01	82494550609.68480
2003-10-01	90196138794.12140
2004-01-01	93724247938.23900
2004-04-01	95850517126.15100
2004-07-01	100424466788.96901
2004-10-01	110421869858.47000
2005-01-01	108611276354.54200
2005-04-01	114235354627.28600
2005-07-01	119035637542.37500
2005-10-01	122490821113.13300
2006-01-01	125278656150.80800
2006-04-01	129994367199.31000
2006-07-01	134282734241.92398
2006-10-01	134305105733.76500
2007-01-01	130425090325.61200
2007-04-01	134319104745.29199
2007-07-01	139236656518.91800
2007-10-01	156028717253.60300
2008-01-01	164492409333.22000
2008-04-01	174753006649.31200
2008-07-01	187521033045.46400
2008-10-01	166888285148.12300
2009-01-01	115123293276.04000
2009-04-01	108087893101.78500
2009-07-01	127426397239.76300
2009-10-01	139395815065.75600
2010-01-01	142609622058.73102
2010-04-01	150632076174.84000
2010-07-01	161605476199.35300
2010-10-01	172238146598.32200
2011-01-01	181575810132.51898
2011-04-01	193078245114.96500
2011-07-01	208727885527.94400
2011-10-01	212052486285.72500
2012-01-01	210509837815.26498
2012-04-01	209955356172.47400
2012-07-01	207346380072.88498
2012-10-01	202088520064.43100
2013-01-01	194095934532.52100
2013-04-01	188367529460.10300
2013-07-01	196318493761.56100
2013-10-01	205794294920.87700
2014-01-01	214829778900.81702
2014-04-01	194391458073.32200
2014-07-01	200342779959.60602
2014-10-01	190164817573.18100
2015-01-01	166453507975.21802
2015-04-01	152950731284.35900
2015-07-01	157458526758.97598
2015-10-01	152715424204.90600
2016-01-01	143358056170.18997
2016-04-01	139592303550.27002
2016-07-01	148996442417.17100
2016-10-01	152621596458.06403
2017-01-01	158217938210.78600
2017-04-01	155937362684.97897
2017-07-01	157914921973.26300
2017-10-01	172559168399.08798
2018-01-01	178962984736.34600
2018-04-01	172811821626.01000
2018-07-01	179320921293.66200