Quarter	Billions of US Dollars
1993-07-01	3.1372
1993-10-01	0.6292
1994-01-01	1.4728
1994-04-01	1.6656
1994-07-01	1.1047
1994-10-01	-0.0392
1995-01-01	-0.2573
1995-04-01	0.4316
1995-07-01	0.4415
1995-10-01	1.4310
1996-01-01	2.1767
1996-04-01	0.5674
1996-07-01	0.2191
1996-10-01	1.0769
1997-01-01	0.2416
1997-04-01	-1.3260
1997-07-01	1.4168
1997-10-01	0.8460
1998-01-01	1.0750
1998-04-01	-0.0599
1998-07-01	1.0035
1998-10-01	0.9071
1999-01-01	-0.2317
1999-04-01	2.2480
1999-07-01	2.2369
1999-10-01	3.2911
2000-01-01	5.0093
2000-04-01	2.1465
2000-07-01	1.0168
2000-10-01	0.7739
2001-01-01	4.7598
2001-04-01	-5.9101
2001-07-01	-1.9295
2001-10-01	-0.5057
2002-01-01	-1.4126
2002-04-01	0.2317
2002-07-01	2.0101
2002-10-01	0.0149
2003-01-01	1.6544
2003-04-01	-6.6637
2003-07-01	-1.0634
2003-10-01	3.5741
2004-01-01	-1.9610
2004-04-01	-1.1339
2004-07-01	-1.3484
2004-10-01	2.1242
2005-01-01	10.2711
2005-04-01	-0.1959
2005-07-01	7.5537
2005-10-01	-4.3309
2006-01-01	7.7635
2006-04-01	2.2282
2006-07-01	-1.0435
2006-10-01	3.0160
2007-01-01	14.1066
2007-04-01	6.8905
2007-07-01	-14.4820
2007-10-01	-3.0494
2008-01-01	-22.7794
2008-04-01	-3.2524
2008-07-01	-7.5842
2008-10-01	-7.7912
2009-01-01	-8.4198
2009-04-01	1.0802
2009-07-01	3.4964
2009-10-01	-1.6421
2010-01-01	1.4655
2010-04-01	-2.4897
2010-07-01	-0.3325
2010-10-01	-0.7751
2011-01-01	-0.0901
2011-04-01	0.3245
2011-07-01	-0.3137
2011-10-01	-0.4494
2012-01-01	-0.9408
2012-04-01	3.3620
2012-07-01	1.0412
2012-10-01	-0.4242
2013-01-01	1.8378
2013-04-01	1.2153
2013-07-01	-2.5839
2013-10-01	-0.8317
2014-01-01	-1.1438
2014-04-01	-0.3957
2014-07-01	-0.4436
2014-10-01	0.9771
2015-01-01	-3.0205
2015-04-01	-1.5197