Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	153000000
1980-04-01	158000000
1980-07-01	-1194000000
1980-10-01	42000000
1981-01-01	561000000
1981-04-01	-174000000
1981-07-01	481000000
1981-10-01	-1165000000
1982-01-01	594000000
1982-04-01	-52000000
1982-07-01	203000000
1982-10-01	-837000000
1983-01-01	983000000
1983-04-01	-17000000
1983-07-01	-296000000
1983-10-01	-597000000
1984-01-01	547000000
1984-04-01	-428000000
1984-07-01	-225000000
1984-10-01	-769000000
1985-01-01	909000000
1985-04-01	60000000
1985-07-01	-449000000
1985-10-01	-479000000
1986-01-01	507000000
1986-04-01	-138000000
1986-07-01	-501000000
1986-10-01	177000000
1987-01-01	196000000
1987-04-01	-217000000
1987-07-01	-412000000
1987-10-01	-454000000
1988-01-01	-3400000000
1988-04-01	-2412000000
1988-07-01	-2876000000
1988-10-01	-169000000
1989-01-01	-2158000000
1989-04-01	-2162000000
1989-07-01	-935000000
1989-10-01	2065000000
1990-01-01	1195000000
1990-04-01	-573000000
1990-07-01	-776000000
1990-10-01	1341000000
1991-01-01	1249000000
1991-04-01	-539000000
1991-07-01	-148000000
1991-10-01	581000000
1992-01-01	-1125000000
1992-04-01	344000000
1992-07-01	-518000000
1992-10-01	-2409000000
1993-01-01	-1275000000
1993-04-01	-94000000
1993-07-01	-686000000
1993-10-01	-953000000
1994-01-01	-125000000
1994-04-01	-607000000
1994-07-01	-527000000
1994-10-01	-3387000000
1995-01-01	-6000000
1995-04-01	-1471000000
1995-07-01	-3769000000
1995-10-01	-1799000000
1996-01-01	-1085000000
1996-04-01	-3358000000
1996-07-01	3678000000
1996-10-01	-623000000
1997-01-01	3340000000
1997-04-01	-3998000000
1997-07-01	2600000000
1997-10-01	9980000000
1998-01-01	-9357000000
1998-04-01	-11262000000
1998-07-01	-5544000000
1998-10-01	-4812000000
1999-01-01	-6314000000
1999-04-01	-4963000000
1999-07-01	-2673000000
1999-10-01	-9033000000
2000-01-01	-10562000000
2000-04-01	-6765000000
2000-07-01	-3987000000
2000-10-01	-2458000000
2001-01-01	-140000000
2001-04-01	-49000000
2001-07-01	-3748000000
2001-10-01	-3639000000
2002-01-01	-3284000000
2002-04-01	-2080000000
2002-07-01	-4305000000
2002-10-01	-2130000000
2003-01-01	-926000000
2003-04-01	-5720000000
2003-07-01	-8517000000
2003-10-01	-10687000000
2004-01-01	-8747000000
2004-04-01	-4006000000
2004-07-01	-6806000000
2004-10-01	-19152000000
2005-01-01	-9514000000
2005-04-01	-2817000000
2005-07-01	-2300000000
2005-10-01	-5175000000
2006-01-01	-5679000000
2006-04-01	-4316000000
2006-07-01	-3689000000
2006-10-01	-8429000000
2007-01-01	-3998000000
2007-04-01	-6250000000
2007-07-01	-2496000000
2007-10-01	-2384000000
2008-01-01	3850000000
2008-04-01	5718000000
2008-07-01	12883000000
2008-10-01	33995000000
2009-01-01	-9017000000
2009-04-01	-19542000000
2009-07-01	-23493000000
2009-10-01	-16615000000
2010-01-01	-8568000000
2010-04-01	-5537000000
2010-07-01	-10378000000
2010-10-01	-2488000000
2011-01-01	-3519000000
2011-04-01	-2618000000
2011-07-01	6326000000
2011-10-01	-14142000000
2012-01-01	-6448000000
2012-04-01	671000000
2012-07-01	-3917000000
2012-10-01	-3491000000
2013-01-01	-3931000000
2013-04-01	4066000000
2013-07-01	-6578000000
2013-10-01	-8035000000