Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	588000000
1980-04-01	803000000
1980-07-01	358000000
1980-10-01	911000000
1981-01-01	-73000000
1981-04-01	844000000
1981-07-01	327000000
1981-10-01	1505000000
1982-01-01	-467000000
1982-04-01	1590000000
1982-07-01	493000000
1982-10-01	2334000000
1983-01-01	-503000000
1983-04-01	1411000000
1983-07-01	-466000000
1983-10-01	1230000000
1984-01-01	-846000000
1984-04-01	1843000000
1984-07-01	-298000000
1984-10-01	362000000
1985-01-01	-881000000
1985-04-01	469000000
1985-07-01	-621000000
1985-10-01	834000000
1986-01-01	-356000000
1986-04-01	364000000
1986-07-01	121000000
1986-10-01	676000000
1987-01-01	158000000
1987-04-01	175000000
1987-07-01	423000000
1987-10-01	-33000000
1988-01-01	216000000
1988-04-01	99000000
1988-07-01	-2514000000
1988-10-01	-2471000000
1989-01-01	950000000
1989-04-01	194000000
1989-07-01	-804000000
1989-10-01	54000000
1990-01-01	45000000
1990-04-01	672000000
1990-07-01	225000000
1990-10-01	736000000
1991-01-01	569000000
1991-04-01	384000000
1991-07-01	176000000
1991-10-01	261000000
1992-01-01	580000000
1992-04-01	328000000
1992-07-01	441000000
1992-10-01	559000000
1993-01-01	375000000
1993-04-01	-123000000
1993-07-01	118000000
1993-10-01	213000000
1994-01-01	192000000
1994-04-01	808000000
1994-07-01	400000000
1994-10-01	294000000
1995-01-01	1111000000
1995-04-01	695000000
1995-07-01	435000000
1995-10-01	944000000
1996-01-01	537000000
1996-04-01	-88000000
1996-07-01	11000000
1996-10-01	844000000
1997-01-01	695000000
1997-04-01	828000000
1997-07-01	845000000
1997-10-01	610000000
1998-01-01	541000000
1998-04-01	-85000000
1998-07-01	588000000
1998-10-01	858000000
1999-01-01	2490000000
1999-04-01	824000000
1999-07-01	778000000
1999-10-01	2140000000
2000-01-01	904000000
2000-04-01	380000000
2000-07-01	667000000
2000-10-01	1305000000
2001-01-01	874000000
2001-04-01	-618000000
2001-07-01	119000000
2001-10-01	1086000000
2002-01-01	-631000000
2002-04-01	479000000
2002-07-01	-139000000
2002-10-01	-161000000
2003-01-01	-1017000000
2003-04-01	47000000
2003-07-01	-18000000
2003-10-01	618000000
2004-01-01	957000000
2004-04-01	-1323000000
2004-07-01	508000000
2004-10-01	242000000
2005-01-01	772000000
2005-04-01	3000000
2005-07-01	672000000
2005-10-01	-1102000000
2006-01-01	1400000000
2006-04-01	1622000000
2006-07-01	-803000000
2006-10-01	1789000000
2007-01-01	-155000000
2007-04-01	1258000000
2007-07-01	1480000000
2007-10-01	1828000000
2008-01-01	-58000000
2008-04-01	-979000000
2008-07-01	1167000000
2008-10-01	-1518000000
2009-01-01	-1748000000
2009-04-01	902000000
2009-07-01	3639000000
2009-10-01	1166000000
2010-01-01	-527000000
2010-04-01	1940000000
2010-07-01	1635000000
2010-10-01	626000000
2011-01-01	743000000
2011-04-01	3392000000
2011-07-01	-2260000000
2011-10-01	-194000000
2012-01-01	-2241000000
2012-04-01	-901000000
2012-07-01	-2148000000
2012-10-01	1685000000
2013-01-01	-271000000
2013-04-01	251000000
2013-07-01	-737000000
2013-10-01	-391000000
2014-01-01	-1409000000
2014-04-01	-1982000000
2014-07-01	-841000000
2014-10-01	-2455000000