Quarter	US Dollars, sum over component sub-periods
1982-01-01	269171385.74425596
1982-04-01	867939065.59555290
1982-07-01	700469214.78675900
1982-10-01	1223370734.08033010
1983-01-01	1225780656.85442000
1983-04-01	1052843446.42835010
1983-07-01	439212929.97533000
1983-10-01	1392970810.11942000
1984-01-01	1086709866.35263000
1984-04-01	254276904.07263100
1984-07-01	756655225.15605900
1984-10-01	244791802.90085799
1985-01-01	1260168337.56204000
1985-04-01	1663187783.37817000
1985-07-01	-338521680.24112700
1985-10-01	719152999.00708000
1986-01-01	1945316761.36981990
1986-04-01	659126665.42059200
1986-07-01	889090787.89097390
1986-10-01	1412730762.28470000
1987-01-01	2595065810.20280030
1987-04-01	2347968943.24810000
1987-07-01	1613324981.84541000
1987-10-01	1369392496.43130020
1988-01-01	2407711965.05978000
1988-04-01	2108804252.10925980
1988-07-01	2068706949.19999000
1988-10-01	3739998499.73886000
1989-01-01	3095462612.10444970
1989-04-01	5572294178.88915100
1989-07-01	8557031769.29568000
1989-10-01	3588880171.91387000
1990-01-01	10254469478.11660000
1990-04-01	11119980035.09650000
1990-07-01	7115055871.59732100
1990-10-01	6943526463.50272900
1991-01-01	7960266988.71697000
1991-04-01	183165206.63917300
1991-07-01	-2773695817.68572000
1991-10-01	2222765523.40896000
1992-01-01	4612996719.56518000
1992-04-01	3179663070.59632970
1992-07-01	-507466653.35231700
1992-10-01	4441228197.87260000
1993-01-01	5593336337.86295000
1993-04-01	575367364.27371300
1993-07-01	3462750300.60540960
1993-10-01	-1055939231.72733000
1994-01-01	-2808828439.10114960
1994-04-01	336998728.14104600
1994-07-01	-4521519180.34533000
1994-10-01	6321524298.81946900
1995-01-01	3454407522.72397000
1995-04-01	8340618277.39990000
1995-07-01	10203786046.44440000
1995-10-01	12489211661.13560000
1996-01-01	13624306998.38990000
1996-04-01	4194793955.05933000
1996-07-01	7186983104.66064900
1996-10-01	-1937633217.50334980
1997-01-01	5427732526.21756000
1997-04-01	3767343935.26619000
1997-07-01	6431104982.81436000
1997-10-01	5952464173.38515000
1998-01-01	7400716861.81748000
1998-04-01	20002772337.78360000
1998-07-01	13895213613.95530100
1998-10-01	14359614155.00960000
1999-01-01	11825984427.46270000
1999-04-01	40706011431.15780000
1999-07-01	15194811030.12860000
1999-10-01	6286443236.64122000
2000-01-01	31516158401.39430000
2000-04-01	13499693538.03600000
2000-07-01	11962708619.50630000
2000-10-01	11929357122.53609800
2001-01-01	20488215935.45960200
2001-04-01	6695482606.03821000
2001-07-01	8316303732.96612900
2001-10-01	1015018505.35125000
2002-01-01	13074294449.12390000
2002-04-01	4392125510.09494000
2002-07-01	-3695716783.74654000
2002-10-01	12189320048.50409900
2003-01-01	20152840054.85380000
2003-04-01	14071926575.14880000
2003-07-01	-6110564250.29796000
2003-10-01	17197829878.77370000
2004-01-01	26670791898.02440000
2004-04-01	9652666255.13688000
2004-07-01	19291037831.44970000
2004-10-01	14687322249.03980000
2005-01-01	34374771895.06510000
2005-04-01	2635302713.85724000
2005-07-01	19275730180.99740200
2005-10-01	9830230129.81879000
2006-01-01	56583099747.25890000
2006-04-01	-6515345982.11460000
2006-07-01	22269156270.79460000
2006-10-01	34882001604.34880000
2007-01-01	73982217082.49110000
2007-04-01	10236399690.54190000
2007-07-01	36739282084.13020000
2007-10-01	31721897812.05990000
2008-01-01	39993447066.44810000
2008-04-01	-4919845435.24011000
2008-07-01	35076291943.96570000
2008-10-01	-11784474705.76540000
2009-01-01	8573002925.46879100
2009-04-01	22009291156.59180000
2009-07-01	12879267083.74390000
2009-10-01	198105165.91114601
2010-01-01	39292580111.64010000
2010-04-01	17064004119.82960000
2010-07-01	10832868644.46600000
2010-10-01	-2785770234.19935000
2011-01-01	47884319387.44100000
2011-04-01	10388040227.19460100
2011-07-01	36165014773.99720000
2011-10-01	3983311841.39700030
2012-01-01	36159912540.10969500
2012-04-01	16615212134.23359900
2012-07-01	27520824319.90150000
2012-10-01	-25888221969.89990000
2013-01-01	40746664940.12200000
2013-04-01	9814861397.43238000
2013-07-01	44313723171.04830000
2013-10-01	-5350884889.91230000
2014-01-01	47919969608.32450000
2014-04-01	790768327.34567090
2014-07-01	-9843037325.91585000
2014-10-01	-12852104367.72280100
2015-01-01	32137379094.68840000
2015-04-01	-1678011337.02714000
2015-07-01	15934936901.84710100
2015-10-01	-42689029309.11909500
2016-01-01	36859752399.22380000
2016-04-01	-693841435.00500500
2016-07-01	-537915591.59349910
2016-10-01	-25820483958.19450000
2017-01-01	57422072759.30730400
2017-04-01	-349641947.46738100
2017-07-01	15282579171.42159800
2017-10-01	1035968675.73587000
2018-01-01	23770950862.88920000
2018-04-01	10003332481.22150000