Quarter	US Dollars, Sum Over Component Sub-periods
1997-01-01	119000000
1997-04-01	17000000
1997-07-01	137000000
1997-10-01	-25000000
1998-01-01	-190000000
1998-04-01	16000000
1998-07-01	35000000
1998-10-01	9000000
1999-01-01	-307000000
1999-04-01	-122000000
1999-07-01	-61000000
1999-10-01	-57000000
2000-01-01	3000000
2000-04-01	-101000000
2000-07-01	42000000
2000-10-01	-28000000
2001-01-01	237000000
2001-04-01	-83000000
2001-07-01	-85000000
2001-10-01	-21000000
2002-01-01	-63000000
2002-04-01	-410000000
2002-07-01	-313000000
2002-10-01	-371000000
2003-01-01	8000000
2003-04-01	-135000000
2003-07-01	-881000000
2003-10-01	-288000000
2004-01-01	-554000000
2004-04-01	-59000000
2004-07-01	-133000000
2004-10-01	-585000000
2005-01-01	-505000000
2005-04-01	-926000000
2005-07-01	-808000000
2005-10-01	-270000000
2006-01-01	-1005000000
2006-04-01	-456000000
2006-07-01	-1183000000
2006-10-01	-2005000000
2007-01-01	-615000000
2007-04-01	-1904000000
2007-07-01	-2173000000
2007-10-01	-1648000000
2008-01-01	1003000000
2008-04-01	-1626000000
2008-07-01	2067000000
2008-10-01	914000000
2009-01-01	159000000
2009-04-01	-411000000
2009-07-01	-811000000
2009-10-01	-385000000
2010-01-01	-807000000
2010-04-01	232000000
2010-07-01	-217000000
2010-10-01	-319000000
2011-01-01	-610000000
2011-04-01	-266000000
2011-07-01	1065000000
2011-10-01	680000000
2012-01-01	-202000000
2012-04-01	210000000
2012-07-01	-74000000
2012-10-01	-370000000
2013-01-01	-1633000000
2013-04-01	-580000000
2013-07-01	-352000000
2013-10-01	386000000
2014-01-01	-1222000000