Quarter	Billions of US Dollars
1993-07-01	8.2365
1993-10-01	7.2099
1994-01-01	5.0117
1994-04-01	10.0560
1994-07-01	31.9190
1994-10-01	17.0510
1995-01-01	8.9718
1995-04-01	17.7520
1995-07-01	22.6174
1995-10-01	10.4991
1996-01-01	12.2469
1996-04-01	15.5283
1996-07-01	18.4022
1996-10-01	12.7731
1997-01-01	7.2540
1997-04-01	8.3145
1997-07-01	1.1935
1997-10-01	-2.6513
1998-01-01	-9.5375
1998-04-01	-8.3170
1998-07-01	-9.3233
1998-10-01	-11.0764
1999-01-01	-9.9910
1999-04-01	-7.5391
1999-07-01	0.5896
1999-10-01	-8.5764
2000-01-01	-1.1721
2000-04-01	12.1131
2000-07-01	4.8490
2000-10-01	-4.7029
2001-01-01	-5.0046
2001-04-01	-0.3506
2001-07-01	2.7141
2001-10-01	-3.7246
2002-01-01	-12.9259
2002-04-01	1.5652
2002-07-01	-3.5752
2002-10-01	-2.5612
2003-01-01	-5.6464
2003-04-01	-0.9990
2003-07-01	0.9717
2003-10-01	5.6550
2004-01-01	3.4430
2004-04-01	8.5715
2004-07-01	3.8679
2004-10-01	-1.8543
2005-01-01	3.5163
2005-04-01	-4.0222
2005-07-01	2.1377
2005-10-01	7.7649
2006-01-01	0.6039
2006-04-01	1.1261
2006-07-01	-0.1132
2006-10-01	7.0891
2007-01-01	6.6911
2007-04-01	19.6593
2007-07-01	3.9926
2007-10-01	7.5989
2008-01-01	-5.1663
2008-04-01	4.6137
2008-07-01	2.8881
2008-10-01	-1.6806
2009-01-01	-12.6062
2009-04-01	-7.3074
2009-07-01	-5.0860
2009-10-01	-10.6903
2010-01-01	-7.2657
2010-04-01	-5.3910
2010-07-01	1.9218
2010-10-01	2.5491
2011-01-01	1.0282
2011-04-01	-2.7695
2011-07-01	-1.0731
2011-10-01	-2.9647
2012-01-01	3.6250
2012-04-01	-4.6404
2012-07-01	-0.6496
2012-10-01	4.5123
2013-01-01	-16.6167
2013-04-01	-11.5173
2013-07-01	-0.7735
2013-10-01	5.6785
2014-01-01	-5.0909
2014-04-01	2.8475
2014-07-01	0.0871
2014-10-01	-0.9984
2015-01-01	-5.2548
2015-04-01	-3.0767