Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	1943000000
1980-04-01	1432000000
1980-07-01	2635000000
1980-10-01	1130000000
1981-01-01	1282000000
1981-04-01	1314000000
1981-07-01	593000000
1981-10-01	2022000000
1982-01-01	280000000
1982-04-01	1170000000
1982-07-01	702000000
1982-10-01	3033000000
1983-01-01	268000000
1983-04-01	635000000
1983-07-01	1273000000
1983-10-01	784000000
1984-01-01	46000000
1984-04-01	929000000
1984-07-01	169000000
1984-10-01	372000000
1985-01-01	728000000
1985-04-01	543000000
1985-07-01	588000000
1985-10-01	585000000
1986-01-01	-523000000
1986-04-01	-295000000
1986-07-01	-534000000
1986-10-01	-593000000
1987-01-01	-2277000000
1987-04-01	-2465000000
1987-07-01	-2580000000
1987-10-01	-2974000000
1988-01-01	645000000
1988-04-01	-258000000
1988-07-01	-212000000
1988-10-01	-2950000000
1989-01-01	-643000000
1989-04-01	109000000
1989-07-01	135000000
1989-10-01	-871000000
1990-01-01	65000000
1990-04-01	1098000000
1990-07-01	4569000000
1990-10-01	-758000000
1991-01-01	1910000000
1991-04-01	2704000000
1991-07-01	2091000000
1991-10-01	-525000000
1992-01-01	1158000000
1992-04-01	-42000000
1992-07-01	679000000
1992-10-01	1325000000
1993-01-01	1718000000
1993-04-01	-2851000000
1993-07-01	394000000
1993-10-01	-2760000000
1994-01-01	1761000000
1994-04-01	3175000000
1994-07-01	2966000000
1994-10-01	5329000000
1995-01-01	7134000000
1995-04-01	5145000000
1995-07-01	5409000000
1995-10-01	3258000000
1996-01-01	8125000000
1996-04-01	6308000000
1996-07-01	2988000000
1996-10-01	7099000000
1997-01-01	3384000000
1997-04-01	3906000000
1997-07-01	-2370000000
1997-10-01	-2068000000
1998-01-01	-3949000000
1998-04-01	-869000000
1998-07-01	-3239000000
1998-10-01	-2874000000
1999-01-01	-2190000000
1999-04-01	-3335000000
1999-07-01	-565000000
1999-10-01	-2453000000
2000-01-01	4634000000
2000-04-01	-1315000000
2000-07-01	-3388000000
2000-10-01	-3327000000
2001-01-01	-6016000000
2001-04-01	-5158000000
2001-07-01	-1896000000
2001-10-01	-4415000000
2002-01-01	3597000000
2002-04-01	1989000000
2002-07-01	1679000000
2002-10-01	-2875000000
2003-01-01	1456000000
2003-04-01	2414000000
2003-07-01	-2732000000
2003-10-01	-2402000000
2004-01-01	1354000000
2004-04-01	-5354000000
2004-07-01	938000000
2004-10-01	3982000000
2005-01-01	5929000000
2005-04-01	2499000000
2005-07-01	-302000000
2005-10-01	-1065000000
2006-01-01	7620000000
2006-04-01	19050000000
2006-07-01	14043000000
2006-10-01	8653000000
2007-01-01	16445000000
2007-04-01	11560000000
2007-07-01	8692000000
2007-10-01	10326000000
2008-01-01	13770000000
2008-04-01	-540000000
2008-07-01	11899000000
2008-10-01	-34981000000
2009-01-01	2510000000
2009-04-01	-6922000000
2009-07-01	2305000000
2009-10-01	2458000000
2010-01-01	5713000000
2010-04-01	-528000000
2010-07-01	-3292000000
2010-10-01	-7327000000
2011-01-01	17768000000
2011-04-01	3688000000
2011-07-01	-4957000000
2011-10-01	2148000000
2012-01-01	-2120000000
2012-04-01	6369000000
2012-07-01	-7026000000
2012-10-01	-11958000000
2013-01-01	2226000000
2013-04-01	-1321000000
2013-07-01	-7116000000
2013-10-01	434000000