Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	0
1980-04-01	0
1980-07-01	0
1980-10-01	0
1981-01-01	0
1981-04-01	0
1981-07-01	0
1981-10-01	0
1982-01-01	0
1982-04-01	0
1982-07-01	0
1982-10-01	0
1983-01-01	0
1983-04-01	0
1983-07-01	0
1983-10-01	0
1984-01-01	0
1984-04-01	0
1984-07-01	0
1984-10-01	0
1985-01-01	0
1985-04-01	0
1985-07-01	0
1985-10-01	0
1986-01-01	0
1986-04-01	0
1986-07-01	0
1986-10-01	0
1987-01-01	0
1987-04-01	0
1987-07-01	0
1987-10-01	0
1988-01-01	-5000000
1988-04-01	-267000000
1988-07-01	-183000000
1988-10-01	-18000000
1989-01-01	-207000000
1989-04-01	-46000000
1989-07-01	-156000000
1989-10-01	-300000000
1990-01-01	-161000000
1990-04-01	29000000
1990-07-01	-52000000
1990-10-01	-316000000
1991-01-01	38000000
1991-04-01	16000000
1991-07-01	55000000
1991-10-01	90000000
1992-01-01	-287000000
1992-04-01	329000000
1992-07-01	46000000
1992-10-01	-12000000
1993-01-01	8000000
1993-04-01	-223000000
1993-07-01	-437000000
1993-10-01	-334000000
1994-01-01	-436000000
1994-04-01	-903000000
1994-07-01	-732000000
1994-10-01	-410000000
1995-01-01	-518000000
1995-04-01	-1149000000
1995-07-01	-724000000
1995-10-01	-517000000
1996-01-01	-978000000
1996-04-01	-897000000
1996-07-01	-1951000000
1996-10-01	-2587000000
1997-01-01	-520000000
1997-04-01	-457000000
1997-07-01	-100000000
1997-10-01	2153000000
1998-01-01	1097000000
1998-04-01	-1240000000
1998-07-01	-169000000
1998-10-01	-1686000000
1999-01-01	-405000000
1999-04-01	114000000
1999-07-01	972000000
1999-10-01	601000000
2000-01-01	-1575000000
2000-04-01	-205000000
2000-07-01	1214000000
2000-10-01	45000000
2001-01-01	-1146000000
2001-04-01	-599000000
2001-07-01	-886000000
2001-10-01	-2891000000
2002-01-01	73000000
2002-04-01	-2511000000
2002-07-01	-734000000
2002-10-01	-1861000000
2003-01-01	-1355000000
2003-04-01	-2192000000
2003-07-01	-798000000
2003-10-01	-1058000000
2004-01-01	-2557000000
2004-04-01	-3471000000
2004-07-01	-2381000000
2004-10-01	-3367000000
2005-01-01	-4007000000
2005-04-01	-4728000000
2005-07-01	-5339000000
2005-10-01	-3558000000
2006-01-01	-7829000000
2006-04-01	-9376000000
2006-07-01	-5043000000
2006-10-01	-9038000000
2007-01-01	-17456000000
2007-04-01	-14368000000
2007-07-01	-9679000000
2007-10-01	-14933000000
2008-01-01	-336000000
2008-04-01	168000000
2008-07-01	5705000000
2008-10-01	17947000000
2009-01-01	2849000000
2009-04-01	-1474000000
2009-07-01	-1564000000
2009-10-01	1625000000
2010-01-01	678000000
2010-04-01	-1566000000
2010-07-01	1656000000
2010-10-01	-1958000000
2011-01-01	-2657000000
2011-04-01	-3849000000
2011-07-01	2919000000
2011-10-01	-507000000
2012-01-01	-4614000000
2012-04-01	-3801000000
2012-07-01	-8182000000
2012-10-01	-9556000000
2013-01-01	-9751000000
2013-04-01	-5232000000
2013-07-01	-4760000000
2013-10-01	-7303000000