Quarter	US Dollars, Sum Over Component Sub-periods
1988-01-01	-350800000
1988-04-01	-715400000
1988-07-01	-176200000
1988-10-01	-364100000
1989-01-01	-594400000
1989-04-01	-379300000
1989-07-01	-328600000
1989-10-01	-397200000
1990-01-01	-214400000
1990-04-01	34100000
1990-07-01	419700000
1990-10-01	356500000
1991-01-01	-157300000
1991-04-01	189000000
1991-07-01	824000000
1991-10-01	277000000
1992-01-01	787900000
1992-04-01	680300000
1992-07-01	1616900000
1992-10-01	125200000
1993-01-01	652800000
1993-04-01	1148100000
1993-07-01	1658800000
1993-10-01	419300000
1994-01-01	731800000
1994-04-01	531600000
1994-07-01	1269400000
1994-10-01	-227900000
1995-01-01	1337000000
1995-04-01	232300000
1995-07-01	780700000
1995-10-01	-1140600000
1996-01-01	1202600000
1996-04-01	1118200000
1996-07-01	1148800000
1996-10-01	-783400000
1997-01-01	514900000
1997-04-01	185200000
1997-07-01	781600000
1997-10-01	-808300000
1998-01-01	-270800000
1998-04-01	-471100000
1998-07-01	1103300000
1998-10-01	-1939800000
1999-01-01	937900000
1999-04-01	1124100000
1999-07-01	977200000
1999-10-01	301700000
2000-01-01	154900000
2000-04-01	356700000
2000-07-01	1457900000
2000-10-01	537000000
2001-01-01	1850500000
2001-04-01	718400000
2001-07-01	1464700000
2001-10-01	111300000
2002-01-01	1048200000
2002-04-01	1347200000
2002-07-01	1648300000
2002-10-01	953500000
2003-01-01	1409800000
2003-04-01	2011600000
2003-07-01	2593600000
2003-10-01	1323500000
2004-01-01	1821200000
2004-04-01	1851300000
2004-07-01	1357400000
2004-10-01	672000000
2005-01-01	1098400000
2005-04-01	3576900000
2005-07-01	3648700000
2005-10-01	2709300000
2006-01-01	1088200000
2006-04-01	2135400000
2006-07-01	3629600000
2006-10-01	1370900000
2007-01-01	-1558900000
2007-04-01	1754500000
2007-07-01	1901900000
2007-10-01	2315700000
2008-01-01	-808000000
2008-04-01	3475300000
2008-07-01	4048000000
2008-10-01	2376400000
2009-01-01	520400000
2009-04-01	3041300000
2009-07-01	3721900000
2009-10-01	3486900000
2010-01-01	2553800000
2010-04-01	4454100000
2010-07-01	5837600000
2010-10-01	5498000000
2011-01-01	3730700000
2011-04-01	4996000000
2011-07-01	5469400000
2011-10-01	4732100000
2012-01-01	1550300000
2012-04-01	5590700000
2012-07-01	5967900000
2012-10-01	4920400000
2013-01-01	2869900000
2013-04-01	6614400000
2013-07-01	7143800000
2013-10-01	7634200000
2014-01-01	3050500000
2014-04-01	6126000000