Quarter	US Dollars, Sum Over Component Sub-periods
1981-01-01	5516000000
1981-04-01	5788000000
1981-07-01	6000000000
1981-10-01	6044000000
1982-01-01	5162000000
1982-04-01	5001000000
1982-07-01	4730000000
1982-10-01	4854000000
1983-01-01	4087000000
1983-04-01	4593000000
1983-07-01	5104000000
1983-10-01	4905000000
1984-01-01	5214000000
1984-04-01	5478000000
1984-07-01	5257000000
1984-10-01	4805000000
1985-01-01	4361000000
1985-04-01	4622000000
1985-07-01	4618000000
1985-10-01	4926000000
1986-01-01	4446000000
1986-04-01	3211000000
1986-07-01	3269000000
1986-10-01	3470000000
1987-01-01	3747000000
1987-04-01	4124000000
1987-07-01	4468000000
1987-10-01	4867000000
1988-01-01	4884000000
1988-04-01	4737000000
1988-07-01	4938000000
1988-10-01	4950000000
1989-01-01	5199000000
1989-04-01	5638000000
1989-07-01	5903000000
1989-10-01	6234000000
1990-01-01	6055000000
1990-04-01	5596000000
1990-07-01	6654000000
1990-10-01	8502000000
1991-01-01	7391000000
1991-04-01	6987000000
1991-07-01	7524000000
1991-10-01	7733000000
1992-01-01	7470000000
1992-04-01	7891000000
1992-07-01	8776000000
1992-10-01	9659000000
1993-01-01	8977000000
1993-04-01	8906000000
1993-07-01	9380000000
1993-10-01	9344000000
1994-01-01	8874000000
1994-04-01	9555000000
1994-07-01	10760000000
1994-10-01	11034000000
1995-01-01	10812000000
1995-04-01	11998000000
1995-07-01	12082000000
1995-10-01	12562000000
1996-01-01	11112000000
1996-04-01	12528000000
1996-07-01	12816000000
1996-10-01	13732000000
1997-01-01	12963000000
1997-04-01	14737000000
1997-07-01	14364000000
1997-10-01	14234000000
1998-01-01	12827000000
1998-04-01	13193000000
1998-07-01	13466000000
1998-10-01	10885000000
1999-01-01	10810000000
1999-04-01	12402000000
1999-07-01	14270000000
1999-10-01	13760000000
2000-01-01	15113000000
2000-04-01	15738000000
2000-07-01	17829000000
2000-10-01	16727000000
2001-01-01	15400000000
2001-04-01	15004000000
2001-07-01	14231000000
2001-10-01	12729000000
2002-01-01	12724000000
2002-04-01	15114000000
2002-07-01	16311000000
2002-10-01	15017000000
2003-01-01	16408000000
2003-04-01	15357000000
2003-07-01	16180000000
2003-10-01	16165000000
2004-01-01	14754000000
2004-04-01	17503000000
2004-07-01	19055000000
2004-10-01	19454000000
2005-01-01	20201000000
2005-04-01	21663000000
2005-07-01	21996000000
2005-10-01	23135000000
2006-01-01	23262000000
2006-04-01	25484000000
2006-07-01	27604000000
2006-10-01	27178000000
2007-01-01	26626000000
2007-04-01	29202000000
2007-07-01	30009000000
2007-10-01	32177000000
2008-01-01	34412000000
2008-04-01	37345000000
2008-07-01	38081000000
2008-10-01	29768000000
2009-01-01	24195000000
2009-04-01	28158000000
2009-07-01	31289000000
2009-10-01	36004000000
2010-01-01	35088000000
2010-04-01	37444000000
2010-07-01	39712000000
2010-10-01	45830000000
2011-01-01	45901000000
2011-04-01	51810000000
2011-07-01	52376000000
2011-10-01	50701000000
2012-01-01	48353000000
2012-04-01	47538000000
2012-07-01	45549000000
2012-10-01	47056000000
2013-01-01	45231000000
2013-04-01	45554000000
2013-07-01	44148000000
2013-10-01	48616000000