Quarter	US Dollars, sum over component sub-periods
1980-01-01	1964900000.00000000
1980-04-01	1432400000.00000000
1980-07-01	2635000000.00000000
1980-10-01	1130300000.00000000
1981-01-01	1303400000.00000000
1981-04-01	1313500000.00000000
1981-07-01	593000000.00000000
1981-10-01	2022200000.00000000
1982-01-01	279700000.00000000
1982-04-01	1169700000.00000000
1982-07-01	702300000.00000000
1982-10-01	3032800000.00000000
1983-01-01	268200000.00000000
1983-04-01	635000000.00000000
1983-07-01	1272800000.00000000
1983-10-01	784000000.00000000
1984-01-01	46100000.00000000
1984-04-01	929400000.00000000
1984-07-01	169000000.00000000
1984-10-01	372300000.00000000
1985-01-01	727500000.00000000
1985-04-01	543400000.00000000
1985-07-01	587900000.00000000
1985-10-01	584800000.00000000
1986-01-01	-523200000.00000006
1986-04-01	-294900000.00000000
1986-07-01	-534200000.00000006
1986-10-01	-593000000.00000000
1987-01-01	-2129199999.99999980
1987-04-01	-2423400000.00000000
1987-07-01	-2498400000.00000000
1987-10-01	-2831600000.00000000
1988-01-01	621600000.00000000
1988-04-01	-167600000.00000000
1988-07-01	-134199999.99999999
1988-10-01	-3010800000.00000000
1989-01-01	-546500000.00000000
1989-04-01	16900000.00000000
1989-07-01	247500000.00000000
1989-10-01	-1243100000.00000000
1990-01-01	275000000.00000000
1990-04-01	1193700000.00000000
1990-07-01	4531200000.00000000
1990-10-01	-707100000.00000000
1991-01-01	1929600000.00000000
1991-04-01	2537500000.00000000
1991-07-01	2534300000.00000000
1991-10-01	-3100000.00000000
1992-01-01	1963900000.00000000
1992-04-01	474900000.00000000
1992-07-01	1096400000.00000000
1992-10-01	1388300000.00000000
1993-01-01	1790700000.00000000
1993-04-01	-2166000000.00000000
1993-07-01	731800000.00000000
1993-10-01	-1811600000.00000000
1994-01-01	2234200000.00000000
1994-04-01	2891600000.00000000
1994-07-01	3241900000.00000000
1994-10-01	5264400000.00000000
1995-01-01	7245300000.00000000
1995-04-01	5238400000.00000000
1995-07-01	5303300000.00000000
1995-10-01	3662600000.00000000
1996-01-01	7565000000.00000000
1996-04-01	6682200000.00000000
1996-07-01	2840300000.00000000
1996-10-01	7483300000.00000000
1997-01-01	4398800000.00000000
1997-04-01	4298500000.00000000
1997-07-01	-1689500000.00000000
1997-10-01	-2273900000.00000000
1998-01-01	-3502900000.00000000
1998-04-01	-457000000.00000000
1998-07-01	-2262400000.00000000
1998-10-01	-1545900000.00000000
1999-01-01	-1763500000.00000000
1999-04-01	-3848000000.00000000
1999-07-01	-994000000.00000000
1999-10-01	-2321200000.00000000
2000-01-01	5923200000.00000000
2000-04-01	-1065500000.00000000
2000-07-01	-2944700000.00000000
2000-10-01	-3227600000.00000000
2001-01-01	-5979100000.00000000
2001-04-01	-5191000000.00000000
2001-07-01	-1908400000.00000000
2001-10-01	-4431300000.00000000
2002-01-01	3110100000.00000000
2002-04-01	1449800000.00000000
2002-07-01	1194700000.00000000
2002-10-01	-3257600000.00000000
2003-01-01	1681900000.00000000
2003-04-01	869500000.00000000
2003-07-01	-3574800000.00000000
2003-10-01	-2743200000.00000000
2004-01-01	2268900000.00000000
2004-04-01	-4268500000.00000000
2004-07-01	-1347300000.00000000
2004-10-01	2466900000.00000000
2005-01-01	4842900000.00000000
2005-04-01	1910500000.00000000
2005-07-01	-1118600000.00000000
2005-10-01	-2009000000.00000000
2006-01-01	7667500000.00000000
2006-04-01	18637200000.00000000
2006-07-01	12481500000.00000000
2006-10-01	7572500000.00000000
2007-01-01	17099800000.00000000
2007-04-01	12393200000.00000000
2007-07-01	8874100000.00000000
2007-10-01	11113800000.00000000
2008-01-01	14990700000.00000000
2008-04-01	-412800000.00000000
2008-07-01	12496700000.00000000
2008-10-01	-38175000000.00000000
2009-01-01	-737700000.00000000
2009-04-01	-5936600000.00000000
2009-07-01	1515100000.00000000
2009-10-01	2711300000.00000000
2010-01-01	2370000000.00000000
2010-04-01	461500000.00000000
2010-07-01	-2321600000.00000000
2010-10-01	-9398900000.00000000
2011-01-01	18884200000.00000000
2011-04-01	3798000000.00000000
2011-07-01	-5036600000.00000000
2011-10-01	1978100000.00000000
2012-01-01	-4285100000.00000050
2012-04-01	8547000000.00000000
2012-07-01	-8740300000.00000000
2012-10-01	-13558800000.00000000
2013-01-01	5404800000.00000000
2013-04-01	-1874000000.00000000
2013-07-01	-7932600000.00000000
2013-10-01	-1782600000.00000000
2014-01-01	9816000000.00000000
2014-04-01	9202500000.00000000
2014-07-01	-2624700000.00000000
2014-10-01	-3884400000.00000000
2015-01-01	-944600000.00000000
2015-04-01	4315700000.00000000
2015-07-01	-1445800000.00000000
2015-10-01	-9177900000.00000000
2016-01-01	-5469000000.00000000
2016-04-01	4552000000.00000000
2016-07-01	2829400000.00000000
2016-10-01	-1070700000.00000000
2017-01-01	1625200000.00000000
2017-04-01	-1159000000.00000000
2017-07-01	5180200000.00000000
2017-10-01	-2199100000.00000000
2018-01-01	2090199999.99999980
2018-04-01	7665100000.00000000
2018-07-01	1376500000.00000000