Quarter	US Dollars, Sum Over Component Sub-periods
1994-01-01	2761000000
1994-04-01	4439000000
1994-07-01	4069000000
1994-10-01	4167000000
1995-01-01	3366000000
1995-04-01	5051000000
1995-07-01	6291000000
1995-10-01	5497000000
1996-01-01	4259000000
1996-04-01	4762000000
1996-07-01	5190000000
1996-10-01	4454000000
1997-01-01	4162000000
1997-04-01	4764000000
1997-07-01	5892000000
1997-10-01	5207000000
1998-01-01	4028000000
1998-04-01	4697000000
1998-07-01	4433000000
1998-10-01	3297000000
1999-01-01	2686000000
1999-04-01	3245000000
1999-07-01	3769000000
1999-10-01	3651000000
2000-01-01	3201000000
2000-04-01	3966000000
2000-07-01	4999000000
2000-10-01	4063000000
2001-01-01	4015000000
2001-04-01	5194000000
2001-07-01	6396000000
2001-10-01	4968000000
2002-01-01	4720000000
2002-04-01	5710000000
2002-07-01	6918000000
2002-10-01	6149000000
2003-01-01	5123000000
2003-04-01	6184000000
2003-07-01	8269000000
2003-10-01	7547000000
2004-01-01	6332000000
2004-04-01	7963000000
2004-07-01	10213000000
2004-10-01	8779000000
2005-01-01	7161000000
2005-04-01	9144000000
2005-07-01	11780000000
2005-10-01	10661000000
2006-01-01	8271000000
2006-04-01	10659000000
2006-07-01	13202000000
2006-10-01	12584000000
2007-01-01	10655000000
2007-04-01	13712000000
2007-07-01	16872000000
2007-10-01	16906000000
2008-01-01	14753000000
2008-04-01	19502000000
2008-07-01	23184000000
2008-10-01	18029000000
2009-01-01	12162000000
2009-04-01	14716000000
2009-07-01	17813000000
2009-10-01	16738000000
2010-01-01	14037000000
2010-04-01	17310000000
2010-07-01	21733000000
2010-10-01	20602000000
2011-01-01	16956000000
2011-04-01	22232000000
2011-07-01	26721000000
2011-10-01	24064000000
2012-01-01	20410000000
2012-04-01	25019000000