Quarter	US Dollars, sum over component sub-periods
1986-01-01	0.000000000
1986-04-01	0.000000000
1986-07-01	0.000000000
1986-10-01	0.000000000
1987-01-01	0.000000000
1987-04-01	0.000000000
1987-07-01	0.000000000
1987-10-01	0.000000000
1988-01-01	0.000000000
1988-04-01	0.000000000
1988-07-01	0.000000000
1988-10-01	0.000000000
1989-01-01	0.000000000
1989-04-01	0.000000000
1989-07-01	0.000000000
1989-10-01	0.000000000
1990-01-01	0.000000000
1990-04-01	0.000000000
1990-07-01	0.000000000
1990-10-01	0.000000000
1991-01-01	0.000000000
1991-04-01	0.000000000
1991-07-01	0.000000000
1991-10-01	0.000000000
1992-01-01	0.000000000
1992-04-01	0.000000000
1992-07-01	0.000000000
1992-10-01	0.000000000
1993-01-01	0.000000000
1993-04-01	0.000000000
1993-07-01	0.000000000
1993-10-01	0.000000000
1994-01-01	0.000000000
1994-04-01	0.000000000
1994-07-01	0.000000000
1994-10-01	0.000000000
1995-01-01	0.000000000
1995-04-01	0.000000000
1995-07-01	0.000000000
1995-10-01	0.000000000
1996-01-01	9188279.191024471
1996-04-01	4572674.479539551
1996-07-01	-1554489.856580420
1996-10-01	9821558.249186260
1997-01-01	-19575156.328755600
1997-04-01	-26188604.957246900
1997-07-01	-8121939.864534459
1997-10-01	-1659988.210791580
1998-01-01	-57635735.096751600
1998-04-01	-19832839.877363600
1998-07-01	-28093236.392350600
1998-10-01	26811560.647796100
1999-01-01	1633439.184436970
1999-04-01	-49806582.616973300
1999-07-01	35239148.567975804
1999-10-01	32603597.787858100
2000-01-01	27320318.446173100
2000-04-01	50595503.848491500
2000-07-01	44288359.019566400
2000-10-01	-81109395.527795600
2001-01-01	-21868490.692481600
2001-04-01	-52601016.868405400
2001-07-01	-60447184.628772900
2001-10-01	-4328951.162233690
2002-01-01	-52772864.921995595
2002-04-01	-61431515.612006500
2002-07-01	-105411789.533720000
2002-10-01	23574751.415466600
2003-01-01	-44880408.056532405
2003-04-01	-43700936.282604100
2003-07-01	-93371243.482393300
2003-10-01	71645070.890299810
2004-01-01	-97513101.803162600
2004-04-01	-135556618.892967020
2004-07-01	-176375124.313735000
2004-10-01	-175296765.306368000
2005-01-01	-113411606.948465000
2005-04-01	-146565238.075201000
2005-07-01	-128470051.424249000
2005-10-01	-82180097.453098100
2006-01-01	7010960.832841600
2006-04-01	29216167.138481300
2006-07-01	11245978.770009900
2006-10-01	-34494183.603234805
2007-01-01	-146636331.411608000
2007-04-01	-129090490.807433010
2007-07-01	123297539.825467000
2007-10-01	138984809.112802000
2008-01-01	-33625048.739453200
2008-04-01	13796563.003482299
2008-07-01	-66023773.245060200
2008-10-01	7815853.950007981
2009-01-01	233778594.851134000
2009-04-01	119163038.265558000
2009-07-01	-13125072.953098200
2009-10-01	230271269.184201000
2010-01-01	37457808.667568500
2010-04-01	46234352.621141100
2010-07-01	-110012912.313652000
2010-10-01	108961270.975562990
2011-01-01	-108928079.575471000
2011-04-01	107630852.860026000
2011-07-01	212406180.324584000
2011-10-01	103722282.443544000
2012-01-01	190093932.740667000
2012-04-01	246719056.974459980
2012-07-01	101136768.449559000
2012-10-01	32119470.970811497
2013-01-01	10847867.297311000
2013-04-01	293286513.759660000
2013-07-01	-117866119.302740990
2013-10-01	157045650.458182000
2014-01-01	-66212843.048357100
2014-04-01	-148127582.969263000
2014-07-01	-548959439.213428000
2014-10-01	248439228.079389000
2015-01-01	-116642609.797832000
2015-04-01	-122564230.736848000
2015-07-01	-416567237.537465040
2015-10-01	329099424.140448000
2016-01-01	238982795.644510980
2016-04-01	183578007.257875000
2016-07-01	-958266698.243306000
2016-10-01	305221338.824135000
2017-01-01	29746627.442433200
2017-04-01	-90823758.061519700
2017-07-01	-280053393.357238000
2017-10-01	-75639995.099801390
2018-01-01	507873372.798261000
2018-04-01	142791371.262295000