Quarter	Billions of US Dollars
1987-04-01	-0.0922
1987-07-01	-0.0052
1987-10-01	-0.0250
1988-01-01	-0.0781
1988-04-01	-0.1269
1988-07-01	-0.0764
1988-10-01	-0.1027
1989-01-01	-0.0716
1989-04-01	0.0500
1989-07-01	-0.0566
1989-10-01	-0.0150
1990-04-01	-0.0965
1990-07-01	-0.0500
1990-10-01	-0.0250
1991-01-01	0.0200
1991-04-01	0.0500
1991-07-01	0.1300
1991-10-01	0.1282
1992-01-01	0.1621
1992-04-01	0.9450
1992-07-01	0.0100
1992-10-01	0.4300
1993-01-01	0.5400
1993-04-01	1.2351
1993-07-01	5.1171
1993-10-01	1.6826
1994-01-01	2.4140
1994-04-01	1.0795
1994-07-01	0.4875
1994-10-01	0.6398
1995-01-01	-2.1980
1995-04-01	0.4295
1995-07-01	1.1315
1995-10-01	0.2487
1996-01-01	1.7807
1996-04-01	4.2463
1996-07-01	-3.5238
1996-10-01	0.8472
1997-01-01	0.6689
1997-04-01	-0.2703
1997-07-01	3.1785
1997-10-01	-2.7140
1998-01-01	2.3229
1998-04-01	1.9905
1998-07-01	-2.7563
1998-10-01	-2.5965
1999-01-01	-1.2690
1999-04-01	0.5211
1999-07-01	-0.0784
1999-10-01	0.5179
2000-01-01	1.2724
2000-04-01	-1.6753
2000-07-01	0.0512
2000-10-01	0.4267
2001-01-01	0.0433
2001-04-01	0.2530
2001-07-01	-2.5096
2001-10-01	-0.2162
2002-01-01	-0.4044
2002-04-01	-0.3124
2002-07-01	-0.8728
2002-10-01	-0.1102
2003-01-01	1.8230
2003-04-01	0.6991
2003-07-01	-0.4474
2003-10-01	-0.5452
2004-01-01	-0.1473
2004-04-01	0.0119
2004-07-01	-0.1518
2004-10-01	-0.7018
2005-01-01	-0.5956
2005-04-01	0.3565
2005-07-01	-0.3952
2005-10-01	1.7108
2006-01-01	1.8710
2006-04-01	0.1959
2006-07-01	0.4449
2006-10-01	0.7877
2007-01-01	2.4280
2007-04-01	2.7320
2007-07-01	-1.2535
2007-10-01	0.3173
2008-01-01	0.7596
2008-04-01	-0.5639
2008-07-01	-1.5601
2008-10-01	-0.5749
2009-01-01	-0.7382
2009-04-01	0.7050
2009-07-01	1.3134
2009-10-01	2.1611
2010-01-01	5.3743
2010-04-01	4.0843
2010-07-01	6.1176
2010-10-01	3.2633
2011-01-01	5.5413
2011-04-01	7.9397
2011-07-01	0.9064
2011-10-01	1.9933
2012-01-01	10.2974
2012-04-01	3.4971
2012-07-01	7.9175
2012-10-01	9.7801
2013-01-01	7.5401
2013-04-01	2.5978
2013-07-01	4.1009
2013-10-01	-0.1384
2014-01-01	2.1805
2014-04-01	4.4244
2014-07-01	3.0338
2014-10-01	-0.7267
2015-01-01	-7.1698
2015-04-01	1.8085