Quarter	US Dollars, Sum Over Component Sub-periods
1981-01-01	484000000
1981-04-01	-214000000
1981-07-01	-428000000
1981-10-01	-408000000
1982-01-01	-1505000000
1982-04-01	-838000000
1982-07-01	-1477000000
1982-10-01	-1504000000
1983-01-01	-3112000000
1983-04-01	-1163000000
1983-07-01	-1048000000
1983-10-01	-1015000000
1984-01-01	-786000000
1984-04-01	-75000000
1984-07-01	-355000000
1984-10-01	-640000000
1985-01-01	-821000000
1985-04-01	-492000000
1985-07-01	-142000000
1985-10-01	-468000000
1986-01-01	-620000000
1986-04-01	-1155000000
1986-07-01	-1345000000
1986-10-01	-791000000
1987-01-01	-617000000
1987-04-01	-811000000
1987-07-01	-552000000
1987-10-01	-118000000
1988-01-01	-60000000
1988-04-01	-497000000
1988-07-01	-219000000
1988-10-01	-621000000
1989-01-01	-356000000
1989-04-01	-276000000
1989-07-01	-299000000
1989-10-01	-177000000
1990-01-01	-676000000
1990-04-01	-816000000
1990-07-01	-1208000000
1990-10-01	-288000000
1991-01-01	-1203000000
1991-04-01	-1304000000
1991-07-01	-932000000
1991-10-01	-821000000
1992-01-01	-1085000000
1992-04-01	-952000000
1992-07-01	-770000000
1992-10-01	27000000
1993-01-01	-596000000
1993-04-01	-295000000
1993-07-01	-382000000
1993-10-01	-833000000
1994-01-01	-1230000000
1994-04-01	-586000000
1994-07-01	-158000000
1994-10-01	-819000000
1995-01-01	-1688000000
1995-04-01	-1930000000
1995-07-01	-1609000000
1995-10-01	-1204000000
1996-01-01	-2034000000
1996-04-01	-2564000000
1996-07-01	-2111000000
1996-10-01	-954000000
1997-01-01	-2192000000
1997-04-01	-1103000000
1997-07-01	-1393000000
1997-10-01	-201000000
1998-01-01	1000000000
1998-04-01	671000000
1998-07-01	1682000000
1998-10-01	745000000
1999-01-01	1513000000
1999-04-01	850000000
1999-07-01	1885000000
1999-10-01	1534000000
2000-01-01	1898000000
2000-04-01	1354000000
2000-07-01	2243000000
2000-10-01	2497000000
2001-01-01	2060000000
2001-04-01	1339000000
2001-07-01	2361000000
2001-10-01	1140000000
2002-01-01	1659000000
2002-04-01	1908000000
2002-07-01	2407000000
2002-10-01	1850000000
2003-01-01	1477000000
2003-04-01	2098000000
2003-07-01	2140000000
2003-10-01	2392000000
2004-01-01	-1993000000
2004-04-01	973000000
2004-07-01	2038000000
2004-10-01	544000000
2005-01-01	209000000
2005-04-01	436000000
2005-07-01	-1165000000
2005-10-01	797000000
2006-01-01	2949000000
2006-04-01	1959000000
2006-07-01	3795000000
2006-10-01	2157000000
2007-01-01	2640000000
2007-04-01	2271000000
2007-07-01	2151000000
2007-10-01	3430000000
2008-01-01	2742000000
2008-04-01	-1013000000
2008-07-01	-967000000
2008-10-01	-637000000
2009-01-01	2690000000
2009-04-01	2377000000
2009-07-01	1781000000
2009-10-01	3781000000
2010-01-01	1891000000
2010-04-01	1342000000
2010-07-01	1043000000
2010-10-01	870000000
2011-01-01	2947000000
2011-04-01	273000000
2011-07-01	766000000
2011-10-01	-2301000000
2012-01-01	-3192000000
2012-04-01	-8149000000
2012-07-01	-5265000000
2012-10-01	-7812000000
2013-01-01	-5905000000
2013-04-01	-9998000000
2013-07-01	-8529000000
2013-10-01	-4018000000