Quarter	US Dollars, sum over component sub-periods
1995-01-01	-413887513.56711900
1995-04-01	887662254.57514800
1995-07-01	1303398309.55709000
1995-10-01	3701678099.64415000
1996-01-01	-744916357.24415800
1996-04-01	-355648932.25315000
1996-07-01	1000799279.63528000
1996-10-01	692252552.26718400
1997-01-01	-485193760.52443700
1997-04-01	189299264.43337500
1997-07-01	1039825518.67161010
1997-10-01	759978655.35938800
1998-01-01	1027535674.65957010
1998-04-01	202377301.90338700
1998-07-01	-355119247.49018200
1998-10-01	650773175.02242400
1999-01-01	77293180.80629711
1999-04-01	1274736927.73852010
1999-07-01	368688111.81785600
1999-10-01	1634832818.76913000
2000-01-01	666957801.99446300
2000-04-01	-489566921.87778600
2000-07-01	425605040.23659400
2000-10-01	333451254.24356500
2001-01-01	474009868.43456200
2001-04-01	1930964022.63284000
2001-07-01	-1695385.70556432
2001-10-01	791643105.29050400
2002-01-01	-647875894.44131300
2002-04-01	-38668170.72685890
2002-07-01	805897700.54038390
2002-10-01	576182372.39125600
2003-01-01	2310080846.08474000
2003-04-01	-964881678.15025000
2003-07-01	2380194005.50268000
2003-10-01	2968594647.67491000
2004-01-01	-1023327801.63226010
2004-04-01	1172677055.65118980
2004-07-01	1721872405.23743000
2004-10-01	3346164911.35216000
2005-01-01	2863235045.86287980
2005-04-01	3376962237.41116000
2005-07-01	1410174715.97699000
2005-10-01	4116091530.51025000
2006-01-01	7851394529.09686100
2006-04-01	5561968287.96502000
2006-07-01	4389330624.06953050
2006-10-01	7368316939.92945000
2007-01-01	8580470310.46898000
2007-04-01	28634276851.58410300
2007-07-01	6319199249.04119000
2007-10-01	34485415594.96390500
2008-01-01	21442417371.09110300
2008-04-01	4582003858.15621000
2008-07-01	40771542279.46900000
2008-10-01	25863892544.75100000
2009-01-01	13942749802.75450100
2009-04-01	-17566386115.13540000
2009-07-01	10176169364.70090000
2009-10-01	-210974280.64690602
2010-01-01	7114471014.92599000
2010-04-01	-5541881388.48997000
2010-07-01	-2633693268.51720000
2010-10-01	-18943913200.37170000
2011-01-01	11683243028.44000000
2011-04-01	-10414993630.33460000
2011-07-01	-6206670825.46836950
2011-10-01	14906606743.53810000
2012-01-01	-4567630023.60087000
2012-04-01	1245147172.99161000
2012-07-01	-2869212187.48157000
2012-10-01	6043998999.09148000
2013-01-01	5082840831.36473000
2013-04-01	-2192734892.79873000
2013-07-01	-7410077965.55170000
2013-10-01	-168117533.75131097
2014-01-01	5456303916.83148000
2014-04-01	-1320679405.77560000
2014-07-01	4130688465.30343060
2014-10-01	3963159655.36547000
2015-01-01	3233495170.46490000
2015-04-01	-2603391997.77040000
2015-07-01	-2082769151.08185000
2015-10-01	-6554228503.22967100
2016-01-01	-7546140050.77113000
2016-04-01	2625164367.64920000
2016-07-01	-1233062586.60112000
2016-10-01	73955616946.72730000
2017-01-01	4303307782.64341000
2017-04-01	-52018412.83711170
2017-07-01	6258877263.32536000
2017-10-01	-23211674813.00710000
2018-01-01	3743535984.75325000
2018-04-01	3016197287.28260000