Quarter	US Dollars, Sum Over Component Sub-periods
1994-01-01	1630000000
1994-04-01	2100000000
1994-07-01	2687000000
1994-10-01	2007000000
1995-01-01	2151000000
1995-04-01	2776000000
1995-07-01	2744000000
1995-10-01	2897000000
1996-01-01	2951000000
1996-04-01	3288000000
1996-07-01	4089000000
1996-10-01	2953000000
1997-01-01	2928000000
1997-04-01	3449000000
1997-07-01	4233000000
1997-10-01	3469000000
1998-01-01	2830000000
1998-04-01	3236000000
1998-07-01	3565000000
1998-10-01	2742000000
1999-01-01	1774000000
1999-04-01	2286000000
1999-07-01	2621000000
1999-10-01	2386000000
2000-01-01	1819000000
2000-04-01	2322000000
2000-07-01	2887000000
2000-10-01	2536000000
2001-01-01	2258000000
2001-04-01	2832000000
2001-07-01	3398000000
2001-10-01	2953000000
2002-01-01	2672000000
2002-04-01	3297000000
2002-07-01	3968000000
2002-10-01	3673000000
2003-01-01	3104000000
2003-04-01	4030000000
2003-07-01	4750000000
2003-10-01	4345000000
2004-01-01	3973000000
2004-04-01	5056000000
2004-07-01	5997000000
2004-10-01	5569000000
2005-01-01	4837000000
2005-04-01	6192000000
2005-07-01	7061000000
2005-10-01	6881000000
2006-01-01	5944000000
2006-04-01	7636000000
2006-07-01	8785000000
2006-10-01	8737000000
2007-01-01	7644000000
2007-04-01	9327000000
2007-07-01	10860000000
2007-10-01	11426000000
2008-01-01	10303000000
2008-04-01	13334000000
2008-07-01	14776000000
2008-10-01	12766000000
2009-01-01	8324000000
2009-04-01	10652000000
2009-07-01	11430000000
2009-10-01	11188000000
2010-01-01	9219000000
2010-04-01	11168000000
2010-07-01	12165000000
2010-10-01	12429000000
2011-01-01	10579000000
2011-04-01	13910000000
2011-07-01	15231000000
2011-10-01	14304000000
2012-01-01	13133000000
2012-04-01	16416000000