Quarter	Billions of US Dollars
1993-07-01	0.2712
1993-10-01	-0.4546
1994-01-01	1.2849
1994-04-01	0.0512
1994-07-01	1.2961
1994-10-01	0.4159
1995-01-01	0.0792
1995-04-01	-1.1029
1995-07-01	0.9995
1995-10-01	-0.3604
1996-01-01	-2.2612
1996-04-01	0.7780
1996-07-01	-0.4309
1996-10-01	0.7551
1997-01-01	0.4254
1997-04-01	1.7352
1997-07-01	-0.1519
1997-10-01	0.7849
1998-01-01	0.1513
1998-04-01	4.5354
1998-07-01	1.7069
1998-10-01	0.0358
1999-01-01	-1.7656
1999-04-01	2.6406
1999-07-01	-0.2719
1999-10-01	-0.8066
2000-01-01	-0.3810
2000-04-01	0.4459
2000-07-01	2.4403
2000-10-01	-0.2309
2001-01-01	2.2146
2001-04-01	4.3087
2001-07-01	2.8002
2001-10-01	3.0461
2002-01-01	2.4660
2002-04-01	0.1793
2002-07-01	-0.3220
2002-10-01	-0.7480
2003-01-01	1.2723
2003-04-01	0.2948
2003-07-01	0.0129
2003-10-01	2.8290
2004-01-01	-0.3328
2004-04-01	0.4286
2004-07-01	1.4794
2004-10-01	4.3305
2005-01-01	-0.0255
2005-04-01	0.8430
2005-07-01	-0.2416
2005-10-01	-0.9346
2006-01-01	-1.3321
2006-04-01	-0.1612
2006-07-01	2.7391
2006-10-01	4.0633
2007-01-01	5.4181
2007-04-01	2.1901
2007-07-01	2.9912
2007-10-01	4.5709
2008-01-01	-4.6303
2008-04-01	7.9428
2008-07-01	3.3986
2008-10-01	-0.7409
2009-01-01	4.1044
2009-04-01	10.2007
2009-07-01	4.4446
2009-10-01	1.2161
2010-01-01	1.8570
2010-04-01	0.0057
2010-07-01	7.4385
2010-10-01	5.7149
2011-01-01	1.1044
2011-04-01	3.8198
2011-07-01	-1.8879
2011-10-01	1.2751
2012-01-01	4.6024
2012-04-01	5.9443
2012-07-01	5.1716
2012-10-01	8.8187
2013-01-01	3.3938
2013-04-01	8.1825
2013-07-01	5.2497
2013-10-01	9.0024
2014-01-01	7.0094
2014-04-01	4.2698
2014-07-01	0.5137
2014-10-01	4.3553
2015-01-01	13.1614
2015-04-01	-1.1261