Quarter	US Dollars, Sum Over Component Sub-periods
1997-01-01	33000000
1997-04-01	71000000
1997-07-01	287000000
1997-10-01	173000000
1998-01-01	-106000000
1998-04-01	180000000
1998-07-01	-491000000
1998-10-01	55000000
1999-01-01	127000000
1999-04-01	198000000
1999-07-01	141000000
1999-10-01	105000000
2000-01-01	16000000
2000-04-01	163000000
2000-07-01	-368000000
2000-10-01	458000000
2001-01-01	-142000000
2001-04-01	400000000
2001-07-01	-532000000
2001-10-01	-62000000
2002-01-01	-704000000
2002-04-01	-264000000
2002-07-01	79000000
2002-10-01	-9000000
2003-01-01	-227000000
2003-04-01	-311000000
2003-07-01	142000000
2003-10-01	-474000000
2004-01-01	-28000000
2004-04-01	-128000000
2004-07-01	135000000
2004-10-01	221000000
2005-01-01	489000000
2005-04-01	-410000000
2005-07-01	217000000
2005-10-01	-103000000
2006-01-01	-117000000
2006-04-01	-320000000
2006-07-01	-242000000
2006-10-01	-10000000
2007-01-01	-212000000
2007-04-01	-208000000
2007-07-01	-448000000
2007-10-01	-1178000000
2008-01-01	307000000
2008-04-01	-42000000
2008-07-01	-353000000
2008-10-01	-905000000
2009-01-01	-1600000000
2009-04-01	-209000000
2009-07-01	167000000
2009-10-01	-50000000
2010-01-01	-158000000
2010-04-01	-128000000
2010-07-01	59000000
2010-10-01	-560000000
2011-01-01	39000000
2011-04-01	120000000
2011-07-01	-343000000
2011-10-01	1000000
2012-01-01	634000000
2012-04-01	923000000
2012-07-01	807000000
2012-10-01	510000000
2013-01-01	280000000
2013-04-01	91000000
2013-07-01	-6000000
2013-10-01	142000000
2014-01-01	416000000