Quarter	US Dollars, Sum Over Component Sub-periods
1997-01-01	398000000
1997-04-01	-56000000
1997-07-01	-610000000
1997-10-01	-604000000
1998-01-01	1786000000
1998-04-01	20000000
1998-07-01	1449000000
1998-10-01	-1087000000
1999-01-01	578000000
1999-04-01	13000000
1999-07-01	-1953000000
1999-10-01	-1336000000
2000-01-01	-837000000
2000-04-01	-495000000
2000-07-01	495000000
2000-10-01	-3033000000
2001-01-01	-1519000000
2001-04-01	61000000
2001-07-01	-81000000
2001-10-01	-2533000000
2002-01-01	-225000000
2002-04-01	-142000000
2002-07-01	1964000000
2002-10-01	290000000
2003-01-01	-1844000000
2003-04-01	1128000000
2003-07-01	2574000000
2003-10-01	-2351000000
2004-01-01	-2005000000
2004-04-01	-4088000000
2004-07-01	-890000000
2004-10-01	-5016000000
2005-01-01	-1048000000
2005-04-01	-770000000
2005-07-01	-1986000000
2005-10-01	1020000000
2006-01-01	-1553000000
2006-04-01	-427000000
2006-07-01	-469000000
2006-10-01	-1470000000
2007-01-01	-1733000000
2007-04-01	2000000000
2007-07-01	-1870000000
2007-10-01	-168000000
2008-01-01	-3001000000
2008-04-01	1200000000
2008-07-01	509000000
2008-10-01	6509000000
2009-01-01	4601000000
2009-04-01	-914000000
2009-07-01	-623000000
2009-10-01	2211000000
2010-01-01	-2411000000
2010-04-01	-1176000000
2010-07-01	1571000000
2010-10-01	-1885000000
2011-01-01	-2089000000
2011-04-01	640000000
2011-07-01	-2110000000
2011-10-01	-35000000
2012-01-01	2635000000
2012-04-01	-2542000000
2012-07-01	-1548000000
2012-10-01	-510000000
2013-01-01	1150000000
2013-04-01	-662000000
2013-07-01	-2074000000
2013-10-01	1575000000
2014-01-01	-2829000000