Quarter	US Dollars, Sum Over Component Sub-periods
1997-01-01	744000000
1997-04-01	781000000
1997-07-01	572000000
1997-10-01	391000000
1998-01-01	1329000000
1998-04-01	463000000
1998-07-01	-520000000
1998-10-01	514000000
1999-01-01	1248000000
1999-04-01	854000000
1999-07-01	724000000
1999-10-01	659000000
2000-01-01	-83000000
2000-04-01	916000000
2000-07-01	199000000
2000-10-01	-327000000
2001-01-01	161000000
2001-04-01	489000000
2001-07-01	59000000
2001-10-01	1552000000
2002-01-01	-315000000
2002-04-01	312000000
2002-07-01	-716000000
2002-10-01	-275000000
2003-01-01	247000000
2003-04-01	137000000
2003-07-01	-891000000
2003-10-01	-1465000000
2004-01-01	-1070000000
2004-04-01	1084000000
2004-07-01	677000000
2004-10-01	4180000000
2005-01-01	-1135000000
2005-04-01	692000000
2005-07-01	597000000
2005-10-01	-952000000
2006-01-01	-551000000
2006-04-01	400000000
2006-07-01	2387000000
2006-10-01	-1975000000
2007-01-01	-507000000
2007-04-01	-1860000000
2007-07-01	279000000
2007-10-01	-1212000000
2008-01-01	-1394000000
2008-04-01	-2522000000
2008-07-01	-2030000000
2008-10-01	-6215000000
2009-01-01	-2956000000
2009-04-01	405000000
2009-07-01	-3220000000
2009-10-01	-4274000000
2010-01-01	-2997000000
2010-04-01	32000000
2010-07-01	-3025000000
2010-10-01	-4472000000
2011-01-01	-4406000000
2011-04-01	-2692000000
2011-07-01	-1303000000
2011-10-01	-1517000000
2012-01-01	-2099000000
2012-04-01	271000000
2012-07-01	-2075000000
2012-10-01	-164000000
2013-01-01	-2002000000
2013-04-01	-1636000000
2013-07-01	-3224000000
2013-10-01	-1322000000
2014-01-01	-2482000000