Quarter	US Dollars, Sum Over Component Sub-periods
1994-01-01	328000000
1994-04-01	-1375000000
1994-07-01	-1836000000
1994-10-01	3348000000
1995-01-01	-3053000000
1995-04-01	-37000000
1995-07-01	-1959000000
1995-10-01	-3606000000
1996-01-01	-2559000000
1996-04-01	-3258000000
1996-07-01	-1910000000
1996-10-01	476000000
1997-01-01	-2883000000
1997-04-01	-90000000
1997-07-01	-1811000000
1997-10-01	-3996000000
1998-01-01	-2303000000
1998-04-01	-2752000000
1998-07-01	-4800000000
1998-10-01	493000000
1999-01-01	-1036000000
1999-04-01	-1027000000
1999-07-01	-2525000000
1999-10-01	-3893000000
2000-01-01	-1722000000
2000-04-01	-1274000000
2000-07-01	-2901000000
2000-10-01	-3393000000
2001-01-01	-2607000000
2001-04-01	-1541000000
2001-07-01	-2668000000
2001-10-01	-2734000000
2002-01-01	-1016000000
2002-04-01	-934000000
2002-07-01	-2042000000
2002-10-01	-2084000000
2003-01-01	-1702000000
2003-04-01	-1842000000
2003-07-01	-3352000000
2003-10-01	-2277000000
2004-01-01	-2680000000
2004-04-01	-326000000
2004-07-01	-137000000
2004-10-01	-2731000000
2005-01-01	-2022000000
2005-04-01	-1803000000
2005-07-01	-507000000
2005-10-01	-3582000000
2006-01-01	-2020000000
2006-04-01	872000000
2006-07-01	4736000000
2006-10-01	5929000000
2007-01-01	-4177000000
2007-04-01	2235000000
2007-07-01	-3520000000
2007-10-01	-7885000000
2008-01-01	-6106000000
2008-04-01	2904000000
2008-07-01	-4728000000
2008-10-01	-3347000000
2009-01-01	-7831000000
2009-04-01	2916000000
2009-07-01	2585000000
2009-10-01	604000000
2010-01-01	-5472000000
2010-04-01	-1358000000
2010-07-01	3888000000
2010-10-01	-5343000000
2011-01-01	-4687000000
2011-04-01	-114000000
2011-07-01	649000000
2011-10-01	-5839000000
2012-01-01	-6014000000
2012-04-01	-4254000000