Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	1955000000
1980-04-01	1670000000
1980-07-01	1375000000
1980-10-01	921000000
1981-01-01	2044000000
1981-04-01	1265000000
1981-07-01	1065000000
1981-10-01	600000000
1982-01-01	918000000
1982-04-01	763000000
1982-07-01	733000000
1982-10-01	1786000000
1983-01-01	1184000000
1983-04-01	773000000
1983-07-01	484000000
1983-10-01	530000000
1984-01-01	737000000
1984-04-01	687000000
1984-07-01	459000000
1984-10-01	-52000000
1985-01-01	1191000000
1985-04-01	826000000
1985-07-01	89000000
1985-10-01	650000000
1986-01-01	109000000
1986-04-01	-570000000
1986-07-01	-1603000000
1986-10-01	-1618000000
1987-01-01	-2226000000
1987-04-01	-2394000000
1987-07-01	-3153000000
1987-10-01	-3717000000
1988-01-01	-3131000000
1988-04-01	-3139000000
1988-07-01	-3635000000
1988-10-01	-3899000000
1989-01-01	-2384000000
1989-04-01	-1816000000
1989-07-01	-820000000
1989-10-01	-595000000
1990-01-01	1004000000
1990-04-01	196000000
1990-07-01	-251000000
1990-10-01	2606000000
1991-01-01	3606000000
1991-04-01	1803000000
1991-07-01	1438000000
1991-10-01	216000000
1992-01-01	1407000000
1992-04-01	-222000000
1992-07-01	-331000000
1992-10-01	628000000
1993-01-01	-115000000
1993-04-01	-162000000
1993-07-01	-370000000
1993-10-01	-1189000000
1994-01-01	1672000000
1994-04-01	1230000000
1994-07-01	1932000000
1994-10-01	850000000
1995-01-01	3714000000
1995-04-01	2877000000
1995-07-01	2095000000
1995-10-01	1038000000
1996-01-01	4854000000
1996-04-01	6095000000
1996-07-01	5931000000
1996-10-01	5605000000
1997-01-01	7441000000
1997-04-01	2650000000
1997-07-01	3079000000
1997-10-01	726000000
1998-01-01	-10627000000
1998-04-01	-9354000000
1998-07-01	-8843000000
1998-10-01	-7086000000
1999-01-01	-6183000000
1999-04-01	-4885000000
1999-07-01	-5869000000
1999-10-01	-2982000000
2000-01-01	-974000000
2000-04-01	-2747000000
2000-07-01	-4241000000
2000-10-01	-4805000000
2001-01-01	-3476000000
2001-04-01	-2684000000
2001-07-01	-2218000000
2001-10-01	-1977000000
2002-01-01	99000000
2002-04-01	-1615000000
2002-07-01	-2163000000
2002-10-01	-2244000000
2003-01-01	-47000000
2003-04-01	-2747000000
2003-07-01	-6166000000
2003-10-01	-5990000000
2004-01-01	-5294000000
2004-04-01	-11484000000
2004-07-01	-8028000000
2004-10-01	-8907000000
2005-01-01	-4387000000
2005-04-01	-1218000000
2005-07-01	-4436000000
2005-10-01	-7148000000
2006-01-01	294000000
2006-04-01	-2087000000
2006-07-01	-3446000000
2006-10-01	-5787000000
2007-01-01	-266000000
2007-04-01	-1593000000
2007-07-01	-11931000000
2007-10-01	-7699000000
2008-01-01	2064000000
2008-04-01	771000000
2008-07-01	2289000000
2008-10-01	-5987000000
2009-01-01	-4751000000
2009-04-01	-12963000000
2009-07-01	-6873000000
2009-10-01	-10354000000
2010-01-01	923000000
2010-04-01	-8838000000
2010-07-01	-9096000000
2010-10-01	-10250000000
2011-01-01	1095000000
2011-04-01	-3596000000
2011-07-01	-10410000000
2011-10-01	-13843000000
2012-01-01	-2483000000
2012-04-01	-7891000000
2012-07-01	-17143000000
2012-10-01	-23857000000
2013-01-01	-11053000000
2013-04-01	-19053000000
2013-07-01	-19524000000
2013-10-01	-22812000000