Quarter	Billions of US Dollars
1993-07-01	-16.0457
1993-10-01	-4.2252
1994-01-01	2.0230
1994-04-01	-5.3924
1994-07-01	-9.3186
1994-10-01	-9.5398
1995-01-01	-7.0507
1995-04-01	-7.0447
1995-07-01	-7.9060
1995-10-01	0.8368
1996-01-01	1.9479
1996-04-01	4.4666
1996-07-01	0.6047
1996-10-01	-0.3856
1997-01-01	0.0531
1997-04-01	4.6740
1997-07-01	-0.0383
1997-10-01	-4.6653
1998-01-01	-2.5419
1998-04-01	3.2858
1998-07-01	6.4923
1998-10-01	3.5768
1999-01-01	1.2458
1999-04-01	8.6693
1999-07-01	6.7795
1999-10-01	3.7309
2000-01-01	-0.0366
2000-04-01	2.6233
2000-07-01	2.8169
2000-10-01	8.2774
2001-01-01	7.6750
2001-04-01	6.5883
2001-07-01	5.8921
2001-10-01	10.9342
2002-01-01	1.9675
2002-04-01	10.4749
2002-07-01	-2.2123
2002-10-01	-2.1207
2003-01-01	-0.5182
2003-04-01	-0.7053
2003-07-01	3.3924
2003-10-01	11.3632
2004-01-01	-2.7032
2004-04-01	7.5219
2004-07-01	-5.0375
2004-10-01	-5.1413
2005-01-01	-0.1460
2005-04-01	-4.3669
2005-07-01	-7.9487
2005-10-01	-2.7539
2006-01-01	4.7027
2006-04-01	3.3444
2006-07-01	-4.2955
2006-10-01	6.8875
2007-01-01	-0.0670
2007-04-01	12.3889
2007-07-01	7.4223
2007-10-01	7.8978
2008-01-01	-2.8696
2008-04-01	10.3913
2008-07-01	-7.8836
2008-10-01	-4.0589
2009-01-01	-6.3231
2009-04-01	0.7960
2009-07-01	3.0161
2009-10-01	7.0419
2010-01-01	2.4095
2010-04-01	3.3057
2010-07-01	8.4216
2010-10-01	3.6437
2011-01-01	2.9940
2011-04-01	-6.5948
2011-07-01	-3.6407
2011-10-01	-2.2316
2012-01-01	2.5454
2012-04-01	-9.3047
2012-07-01	3.6435
2012-10-01	-1.7016
2013-01-01	6.5657
2013-04-01	10.5568
2013-07-01	9.0352
2013-10-01	37.0045
2014-01-01	13.8986
2014-04-01	15.0389
2014-07-01	12.9756
2014-10-01	3.3147
2015-01-01	2.6344
2015-04-01	16.1480