Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	2265000000
1980-04-01	2125000000
1980-07-01	2337000000
1980-10-01	2475000000
1981-01-01	2443000000
1981-04-01	2447000000
1981-07-01	2376000000
1981-10-01	2426000000
1982-01-01	2324000000
1982-04-01	2276000000
1982-07-01	2199000000
1982-10-01	2186000000
1983-01-01	2067000000
1983-04-01	2253000000
1983-07-01	2275000000
1983-10-01	2374000000
1984-01-01	2260000000
1984-04-01	2154000000
1984-07-01	2229000000
1984-10-01	2314000000
1985-01-01	2299000000
1985-04-01	2457000000
1985-07-01	1997000000
1985-10-01	2449000000
1986-01-01	2270000000
1986-04-01	2451000000
1986-07-01	2421000000
1986-10-01	2593000000
1987-01-01	3014000000
1987-04-01	3332000000
1987-07-01	3275000000
1987-10-01	3398000000
1988-01-01	3374000000
1988-04-01	3345000000
1988-07-01	3016000000
1988-10-01	3505000000
1989-01-01	3263000000
1989-04-01	3376000000
1989-07-01	3007000000
1989-10-01	3402000000
1990-01-01	3610000000
1990-04-01	3575000000
1990-07-01	3712000000
1990-10-01	4411000000
1991-01-01	4256000000
1991-04-01	4297000000
1991-07-01	3763000000
1991-10-01	4778000000
1992-01-01	4275000000
1992-04-01	4570000000
1992-07-01	4648000000
1992-10-01	4897000000
1993-01-01	5207000000
1993-04-01	4967000000
1993-07-01	5066000000
1993-10-01	5293000000
1994-01-01	5302000000
1994-04-01	5933000000
1994-07-01	5489000000
1994-10-01	6004000000
1995-01-01	6673000000
1995-04-01	6526000000
1995-07-01	6501000000
1995-10-01	7265000000
1996-01-01	7397000000
1996-04-01	6838000000
1996-07-01	7029000000
1996-10-01	7391000000
1997-01-01	7168000000
1997-04-01	6984000000
1997-07-01	6883000000
1997-10-01	7122000000
1998-01-01	6854000000
1998-04-01	6708000000
1998-07-01	6363000000
1998-10-01	6693000000
1999-01-01	6995000000
1999-04-01	7365000000
1999-07-01	7751000000
1999-10-01	8456000000
2000-01-01	8403000000
2000-04-01	8376000000
2000-07-01	8775000000
2000-10-01	9193000000
2001-01-01	8784000000
2001-04-01	7956000000
2001-07-01	7520000000
2001-10-01	7479000000
2002-01-01	7497000000
2002-04-01	8183000000
2002-07-01	7764000000
2002-10-01	8548000000
2003-01-01	8111000000
2003-04-01	7913000000
2003-07-01	8453000000
2003-10-01	8839000000
2004-01-01	9480000000
2004-04-01	9427000000
2004-07-01	9842000000
2004-10-01	10758000000
2005-01-01	10645000000
2005-04-01	11085000000
2005-07-01	11625000000
2005-10-01	10533000000
2006-01-01	11279000000
2006-04-01	11759000000
2006-07-01	11429000000
2006-10-01	12880000000
2007-01-01	12266000000
2007-04-01	13413000000
2007-07-01	14683000000
2007-10-01	15636000000
2008-01-01	16340000000
2008-04-01	17087000000
2008-07-01	17368000000
2008-10-01	13627000000
2009-01-01	10101000000
2009-04-01	10397000000
2009-07-01	12348000000
2009-10-01	13227000000
2010-01-01	13747000000
2010-04-01	14162000000
2010-07-01	14180000000
2010-10-01	16228000000
2011-01-01	17495000000
2011-04-01	18656000000
2011-07-01	18447000000
2011-10-01	17838000000
2012-01-01	19148000000
2012-04-01	18452000000
2012-07-01	17324000000
2012-10-01	16859000000
2013-01-01	17373000000
2013-04-01	17772000000
2013-07-01	17900000000
2013-10-01	18241000000
2014-01-01	17860000000
2014-04-01	17665000000
2014-07-01	18138000000
2014-10-01	17391000000