Quarter	US Dollars, sum over component sub-periods
1996-01-01	-317153387.8768460
1996-04-01	-2850865051.2098904
1996-07-01	1838123439.8971300
1996-10-01	-3881400700.2595400
1997-01-01	-1638706056.6346100
1997-04-01	-1166190147.3661401
1997-07-01	1070667520.1210401
1997-10-01	-2736054824.1612100
1998-01-01	-2813356354.1494200
1998-04-01	-5443398381.6948200
1998-07-01	3071065188.1047700
1998-10-01	-3258950432.9384400
1999-01-01	-5742732958.1045890
1999-04-01	-1587238812.4906200
1999-07-01	-365985076.4236560
1999-10-01	-57083648.0388788
2000-01-01	-3349788035.9991300
2000-04-01	-4922490042.0992700
2000-07-01	-2684843520.6510200
2000-10-01	-2680630257.3916500
2001-01-01	-2225430782.0876203
2001-04-01	-2761233584.6028800
2001-07-01	390448820.6203830
2001-10-01	-3018395376.8782597
2002-01-01	-3474082060.1498500
2002-04-01	-1464026364.2659500
2002-07-01	348225651.1255210
2002-10-01	1078503412.9259600
2003-01-01	-3584495249.3399700
2003-04-01	-5939576877.6218300
2003-07-01	371466817.3100120
2003-10-01	3623252397.9664702
2004-01-01	-2572808354.7291200
2004-04-01	-5360935164.6473290
2004-07-01	-3280443107.1829700
2004-10-01	-4140105755.7150800
2005-01-01	-6764588675.3821100
2005-04-01	-3765464774.3262997
2005-07-01	-1164623354.5088600
2005-10-01	-2646324645.4362500
2006-01-01	-11396252315.6812000
2006-04-01	-8495286021.7002400
2006-07-01	9659776043.3322600
2006-10-01	2226374308.9963000
2007-01-01	-8641560992.9035000
2007-04-01	5781909539.3064200
2007-07-01	-745182532.3295159
2007-10-01	-4977559271.3725400
2008-01-01	-1967146376.6763000
2008-04-01	4397193529.1552600
2008-07-01	811234665.3416710
2008-10-01	-5285006343.2029705
2009-01-01	2615128952.7065000
2009-04-01	2744073098.2502100
2009-07-01	-10964197945.0144000
2009-10-01	4214451369.7120300
2010-01-01	-11337214474.2174000
2010-04-01	-24590324630.1395000
2010-07-01	10045388682.2009010
2010-10-01	2348164309.0899300
2011-01-01	-2067244942.9758900
2011-04-01	-8527835758.1233100
2011-07-01	-7809573877.2010200
2011-10-01	-2968162822.5056200
2012-01-01	-18332212736.2030000
2012-04-01	-8381459776.2386800
2012-07-01	-1113699629.8466800
2012-10-01	6861487538.2480110
2013-01-01	3600901026.3783700
2013-04-01	-824092220.5334800
2013-07-01	-4624200749.0570310
2013-10-01	5877288934.4598690
2014-01-01	-1746007335.1818402
2014-04-01	-323616827.8455160
2014-07-01	17308865259.5051000
2014-10-01	-10504832845.2587000
2015-01-01	3935550549.8114400
2015-04-01	-4230632595.3848300
2015-07-01	4025456378.4627600
2015-10-01	-1923732827.3128100
2016-01-01	-2901918747.5498600
2016-04-01	-1923057259.8532400
2016-07-01	784458113.5292660
2016-10-01	-11684509783.6903000
2017-01-01	-1216866207.1849701
2017-04-01	-861125351.9225559
2017-07-01	4252830459.5261297
2017-10-01	1973519431.1764400
2018-01-01	-5781869190.7927400
2018-04-01	-2290691810.9144998