Quarter	US Dollars, Sum Over Component Sub-periods
1994-01-01	1150000000
1994-04-01	3206000000
1994-07-01	166000000
1994-10-01	2446000000
1995-01-01	1306000000
1995-04-01	2359000000
1995-07-01	3504000000
1995-10-01	6851000000
1996-01-01	4577000000
1996-04-01	5721000000
1996-07-01	3563000000
1996-10-01	2218000000
1997-01-01	-7304000000
1997-04-01	6987000000
1997-07-01	7339000000
1997-10-01	-22224000000
1998-01-01	2713000000
1998-04-01	4066000000
1998-07-01	3805000000
1998-10-01	-1555000000
1999-01-01	838000000
1999-04-01	-615000000
1999-07-01	-411000000
1999-10-01	-701000000
2000-01-01	-627000000
2000-04-01	-346000000
2000-07-01	-2941000000
2000-10-01	-258000000
2001-01-01	-965000000
2001-04-01	795000000
2001-07-01	-1734000000
2001-10-01	-4624000000
2002-01-01	-203000000
2002-04-01	-3976000000
2002-07-01	-1399000000
2002-10-01	1704000000
2003-01-01	2841000000
2003-04-01	4398000000
2003-07-01	6555000000
2003-10-01	8851000000
2004-01-01	1070000000
2004-04-01	3966000000
2004-07-01	886000000
2004-10-01	11758000000
2005-01-01	8627000000
2005-04-01	7641000000
2005-07-01	-2585000000
2005-10-01	28674000000
2006-01-01	13103000000
2006-04-01	7311000000
2006-07-01	-19855000000
2006-10-01	29781000000
2007-01-01	24813000000
2007-04-01	49665000000
2007-07-01	30934000000
2007-10-01	34339000000
2008-01-01	13822000000
2008-04-01	47817000000
2008-07-01	29926000000
2008-10-01	-28326000000
2009-01-01	-16846000000
2009-04-01	-844000000
2009-07-01	-3252000000
2009-10-01	-4244000000
2010-01-01	-4073000000
2010-04-01	-1429000000
2010-07-01	10125000000
2010-10-01	5388000000
2011-01-01	-333000000
2011-04-01	19062000000
2011-07-01	5814000000
2011-10-01	16346000000
2012-01-01	-399000000
2012-04-01	18998000000