Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	241000000
1980-04-01	-76000000
1980-07-01	-91000000
1980-10-01	-31000000
1981-01-01	142000000
1981-04-01	-81000000
1981-07-01	-352000000
1981-10-01	-484000000
1982-01-01	241000000
1982-04-01	-131000000
1982-07-01	-75000000
1982-10-01	-331000000
1983-01-01	216000000
1983-04-01	-112000000
1983-07-01	-96000000
1983-10-01	-245000000
1984-01-01	75000000
1984-04-01	-207000000
1984-07-01	-488000000
1984-10-01	-11000000
1985-01-01	-210000000
1985-04-01	-373000000
1985-07-01	-324000000
1985-10-01	-332000000
1986-01-01	-433000000
1986-04-01	92000000
1986-07-01	-109000000
1986-10-01	-453000000
1987-01-01	153000000
1987-04-01	-57000000
1987-07-01	-120000000
1987-10-01	-270000000
1988-01-01	74000000
1988-04-01	316000000
1988-07-01	73000000
1988-10-01	-31000000
1989-01-01	195000000
1989-04-01	205000000
1989-07-01	287000000
1989-10-01	-115000000
1990-01-01	365000000
1990-04-01	-94000000
1990-07-01	-160000000
1990-10-01	-955000000
1991-01-01	-777000000
1991-04-01	530000000
1991-07-01	-77000000
1991-10-01	-313000000
1992-01-01	-457000000
1992-04-01	259000000
1992-07-01	-524000000
1992-10-01	-269000000
1993-01-01	106000000
1993-04-01	-60000000
1993-07-01	1000000
1993-10-01	133000000
1994-01-01	878000000
1994-04-01	1411000000
1994-07-01	302000000
1994-10-01	-1123000000
1995-01-01	505000000
1995-04-01	-533000000
1995-07-01	232000000
1995-10-01	109000000
1996-01-01	436000000
1996-04-01	195000000
1996-07-01	333000000
1996-10-01	-48000000
1997-01-01	674000000
1997-04-01	195000000
1997-07-01	510000000
1997-10-01	839000000
1998-01-01	53000000
1998-04-01	-243000000
1998-07-01	98000000
1998-10-01	-1103000000
1999-01-01	-3097000000
1999-04-01	65000000
1999-07-01	-1649000000
1999-10-01	-178000000
2000-01-01	-966000000
2000-04-01	156000000
2000-07-01	-1503000000
2000-10-01	-1109000000
2001-01-01	2834000000
2001-04-01	459000000
2001-07-01	1412000000
2001-10-01	-1236000000
2002-01-01	1557000000
2002-04-01	579000000
2002-07-01	485000000
2002-10-01	160000000
2003-01-01	400000000
2003-04-01	977000000
2003-07-01	806000000
2003-10-01	946000000
2004-01-01	828000000
2004-04-01	98000000
2004-07-01	-1497000000
2004-10-01	1487000000
2005-01-01	-101000000
2005-04-01	2936000000
2005-07-01	1741000000
2005-10-01	252000000
2006-01-01	4710000000
2006-04-01	-1019000000
2006-07-01	-1856000000
2006-10-01	1204000000
2007-01-01	-495000000
2007-04-01	-2507000000
2007-07-01	-633000000
2007-10-01	126000000
2008-01-01	-2262000000
2008-04-01	358000000
2008-07-01	689000000
2008-10-01	-1797000000
2009-01-01	-1069000000
2009-04-01	-594000000
2009-07-01	2362000000
2009-10-01	1350000000
2010-01-01	-1079000000
2010-04-01	3304000000
2010-07-01	23000000
2010-10-01	845000000
2011-01-01	704000000
2011-04-01	-2539000000
2011-07-01	3615000000
2011-10-01	5474000000
2012-01-01	1660000000
2012-04-01	3486000000
2012-07-01	160000000
2012-10-01	-894000000
2013-01-01	-1456000000
2013-04-01	-1530000000
2013-07-01	1783000000
2013-10-01	2616000000
2014-01-01	-1430000000
2014-04-01	636000000
2014-07-01	1098000000