Quarter	US Dollars, Sum Over Component Sub-periods
1998-01-01	12000000000
1998-04-01	13500000000
1998-07-01	14600000000
1998-10-01	6500000000
1999-01-01	5900000000
1999-04-01	5300000000
1999-07-01	13400000000
1999-10-01	11400000000
2000-01-01	7100000000
2000-04-01	9500000000
2000-07-01	9200000000
2000-10-01	8700000000
2001-01-01	7200000000
2001-04-01	6200000000
2001-07-01	8500000000
2001-10-01	12000000000
2002-01-01	9900000000
2002-04-01	10800000000
2002-07-01	9100000000
2002-10-01	14300000000
2003-01-01	3100000000
2003-04-01	10200000000
2003-07-01	9400000000
2003-10-01	21700000000
2004-01-01	-2600000000
2004-04-01	8400000000
2004-07-01	17900000000
2004-10-01	35200000000
2005-01-01	23500000000
2005-04-01	30800000000
2005-07-01	37300000000
2005-10-01	42700000000
2006-01-01	32200000000
2006-04-01	47800000000
2006-07-01	59700000000
2006-10-01	78100000000
2007-01-01	57400000000
2007-04-01	78900000000
2007-07-01	86200000000
2007-10-01	93500000000
2008-01-01	56400000000
2008-04-01	75100000000
2008-07-01	101300000000
2008-10-01	127700000000
2009-01-01	72200000000
2009-04-01	46700000000
2009-07-01	54200000000
2009-10-01	76400000000
2010-01-01	30300000000
2010-04-01	59500000000
2010-07-01	81400000000
2010-10-01	83000000000
2011-01-01	20800000000
2011-04-01	66900000000
2011-07-01	85300000000
2011-10-01	70600000000
2012-01-01	21900000000
2012-04-01	90900000000
2012-07-01	102900000000
2012-10-01	105800000000
2013-01-01	67500000000
2013-04-01	90000000000