Quarter	US Dollars, Sum Over Component Sub-periods
1979-01-01	242000000
1979-04-01	50000000
1979-07-01	169000000
1979-10-01	176000000
1980-01-01	65000000
1980-04-01	257000000
1980-07-01	45000000
1980-10-01	-16000000
1981-01-01	0
1981-04-01	-4000000
1981-07-01	11000000
1981-10-01	-7000000
1982-01-01	47000000
1982-04-01	7000000
1982-07-01	-42000000
1982-10-01	-10000000
1983-01-01	-17000000
1983-04-01	-33000000
1983-07-01	-94000000
1983-10-01	-136000000
1984-01-01	-26000000
1984-04-01	-110000000
1984-07-01	-76000000
1984-10-01	-56000000
1985-01-01	-80000000
1985-04-01	-9000000
1985-07-01	-37000000
1985-10-01	-103000000
1986-01-01	-181000000
1986-04-01	-103000000
1986-07-01	-49000000
1986-10-01	-143000000
1987-01-01	-117000000
1987-04-01	-60000000
1987-07-01	-140000000
1987-10-01	-111000000
1988-01-01	11000000
1988-04-01	-268000000
1988-07-01	-215000000
1988-10-01	-26000000
1989-01-01	-150000000
1989-04-01	-148000000
1989-07-01	-38000000
1989-10-01	-56000000
1990-01-01	73000000
1990-04-01	54000000
1990-07-01	214000000
1990-10-01	238000000
1991-01-01	521000000
1991-04-01	660000000
1991-07-01	1132000000
1991-10-01	1495000000
1992-01-01	2313000000
1992-04-01	3172000000
1992-07-01	878000000
1992-10-01	8103000000
1993-01-01	1114000000
1993-04-01	3095000000
1993-07-01	2792000000
1993-10-01	5927000000
1994-01-01	4240000000
1994-04-01	45331000000
1994-07-01	1780000000
1994-10-01	2695000000
1995-01-01	-3343000000
1995-04-01	3660000000
1995-07-01	7212000000
1995-10-01	2844000000
1996-01-01	4466000000
1996-04-01	5344000000
1996-07-01	3741000000
1996-10-01	8471000000
1997-01-01	4451000000
1997-04-01	5351000000
1997-07-01	6160000000
1997-10-01	-5054000000
1998-01-01	12480000000
1998-04-01	9407000000
1998-07-01	-6321000000
1998-10-01	3016000000
1999-01-01	-7020000000
1999-04-01	5420000000
1999-07-01	231000000
1999-10-01	4912000000
2000-01-01	3350000000
2000-04-01	1252000000
2000-07-01	3719000000
2000-10-01	330000000
2001-01-01	2882000000
2001-04-01	-794000000
2001-07-01	2158000000
2001-10-01	-3374000000
2002-01-01	2660000000
2002-04-01	-1424000000
2002-07-01	-3723000000
2002-10-01	-2310000000
2003-01-01	1080000000
2003-04-01	2915000000
2003-07-01	-345000000
2003-10-01	1479000000
2004-01-01	2454000000
2004-04-01	-5611000000
2004-07-01	-508000000
2004-10-01	-331000000
2005-01-01	5850000000
2005-04-01	-305000000
2005-07-01	299000000
2005-10-01	812000000
2006-01-01	6239000000
2006-04-01	-7967000000
2006-07-01	3445000000
2006-10-01	7359000000
2007-01-01	9081000000
2007-04-01	15099000000
2007-07-01	11729000000
2007-10-01	12196000000
2008-01-01	6196000000
2008-04-01	7087000000
2008-07-01	3684000000
2008-10-01	-17734000000
2009-01-01	-3531000000
2009-04-01	5794000000
2009-07-01	20431000000
2009-10-01	23465000000
2010-01-01	9328000000
2010-04-01	13837000000
2010-07-01	20056000000
2010-10-01	24574000000
2011-01-01	5763000000
2011-04-01	6672000000
2011-07-01	3495000000
2011-10-01	2523000000
2012-01-01	7477000000
2012-04-01	30000000
2012-07-01	4794000000
2012-10-01	4233000000
2013-01-01	8846000000
2013-04-01	9080000000
2013-07-01	18433000000
2013-10-01	-1694000000
2014-01-01	11962000000
2014-04-01	17298000000
2014-07-01	8535000000
2014-10-01	-4264000000