Quarter	US Dollars, Sum Over Component Sub-periods
1994-01-01	1261000000
1994-04-01	-3459000000
1994-07-01	3916000000
1994-10-01	178000000
1995-01-01	-96000000
1995-04-01	-5936000000
1995-07-01	-1105000000
1995-10-01	-3249000000
1996-01-01	-2034000000
1996-04-01	3431000000
1996-07-01	1390000000
1996-10-01	54000000
1997-01-01	-1331000000
1997-04-01	-8034000000
1997-07-01	1616000000
1997-10-01	5813000000
1998-01-01	892000000
1998-04-01	768000000
1998-07-01	2596000000
1998-10-01	1050000000
1999-01-01	969000000
1999-04-01	-1611000000
1999-07-01	1091000000
1999-10-01	-2227000000
2000-01-01	-3102000000
2000-04-01	-6219000000
2000-07-01	-3979000000
2000-10-01	-2710000000
2001-01-01	-1830000000
2001-04-01	-5340000000
2001-07-01	-2450000000
2001-10-01	1407000000
2002-01-01	-499000000
2002-04-01	-6095000000
2002-07-01	-3231000000
2002-10-01	-1550000000
2003-01-01	-7589000000
2003-04-01	-8052000000
2003-07-01	2623000000
2003-10-01	-13347000000
2004-01-01	-6758000000
2004-04-01	-5043000000
2004-07-01	-6523000000
2004-10-01	-26911000000
2005-01-01	-14422000000
2005-04-01	-18008000000
2005-07-01	-8078000000
2005-10-01	-20952000000
2006-01-01	-21431000000
2006-04-01	-40932000000
2006-07-01	-13825000000
2006-10-01	-31278000000
2007-01-01	-32923000000
2007-04-01	-65548000000
2007-07-01	-7896000000
2007-10-01	-42560000000
2008-01-01	-12092000000
2008-04-01	-64913000000
2008-07-01	-8906000000
2008-10-01	124836000000
2009-01-01	30513000000
2009-04-01	-14204000000
2009-07-01	9074000000
2009-10-01	-28761000000
2010-01-01	-16599000000
2010-04-01	-26115000000
2010-07-01	-2677000000
2010-10-01	8640000000
2011-01-01	-10078000000
2011-04-01	-12882000000
2011-07-01	1761000000
2011-10-01	8569000000
2012-01-01	-4602000000
2012-04-01	-14965000000