Quarter	Billions of US Dollars
1987-04-01	-0.12781
1987-07-01	-0.00524
1987-10-01	-0.02500
1988-01-01	-0.07813
1988-04-01	-0.12690
1988-07-01	-0.07636
1988-10-01	-0.10267
1989-01-01	-0.07164
1989-04-01	0.01800
1989-07-01	-0.05661
1989-10-01	-0.01500
1990-04-01	-0.13647
1990-07-01	0.36980
1990-10-01	-0.02500
1991-01-01	-0.03000
1991-04-01	0.05000
1991-07-01	0.26700
1991-10-01	0.30920
1992-01-01	0.50210
1992-04-01	1.01500
1992-07-01	0.16000
1992-10-01	0.94500
1993-01-01	0.45000
1993-04-01	1.42060
1993-07-01	5.35952
1993-10-01	1.80775
1994-01-01	2.68292
1994-04-01	-0.77197
1994-07-01	0.13627
1994-10-01	1.11639
1995-01-01	-2.74162
1995-04-01	-0.40819
1995-07-01	1.61003
1995-10-01	0.21604
1996-01-01	0.65213
1996-04-01	1.61747
1996-07-01	-0.34706
1996-10-01	0.94356
1997-01-01	0.02516
1997-04-01	0.65834
1997-07-01	2.58083
1997-10-01	-1.86099
1998-01-01	2.38047
1998-04-01	2.45279
1998-07-01	-2.40970
1998-10-01	-1.04745
1999-01-01	-1.81546
1999-04-01	0.62606
1999-07-01	-0.27757
1999-10-01	-0.15525
2000-01-01	0.72021
2000-04-01	-0.03249
2000-07-01	-1.26039
2000-10-01	-0.93763
2001-01-01	0.04484
2001-04-01	-0.20298
2001-07-01	-1.11620
2001-10-01	0.40675
2002-01-01	-0.63634
2002-04-01	-0.95830
2002-07-01	-0.44180
2002-10-01	-0.99294
2003-01-01	1.27748
2003-04-01	0.56686
2003-07-01	-0.31603
2003-10-01	-2.03639
2004-01-01	-0.29416
2004-04-01	-0.67832
2004-07-01	-0.27767
2004-10-01	-0.24455
2005-01-01	-0.32210
2005-04-01	-0.47677
2005-07-01	-0.00356
2005-10-01	0.13295
2006-01-01	0.25802
2006-04-01	-0.37991
2006-07-01	0.53889
2006-10-01	0.44047
2007-01-01	0.10943
2007-04-01	2.88038
2007-07-01	0.81484
2007-10-01	0.51209
2008-01-01	1.09249
2008-04-01	-0.87284
2008-07-01	-1.10500
2008-10-01	-1.25531
2009-01-01	-0.15145
2009-04-01	4.30258
2009-07-01	0.99756
2009-10-01	2.46605
2010-01-01	4.35371
2010-04-01	3.06528
2010-07-01	4.30512
2010-10-01	6.13589
2011-01-01	7.48014
2011-04-01	6.89130
2011-07-01	0.89793
2011-10-01	1.26400
2012-01-01	1.98029
2012-04-01	-0.20205
2012-07-01	5.68937
2012-10-01	4.60735
2013-01-01	3.73996
2013-04-01	1.46428
2013-07-01	2.33727
2013-10-01	-0.44440
2014-01-01	2.06100
2014-04-01	3.19929
2014-07-01	3.62860
2014-10-01	-0.71066
2015-01-01	-3.22098
2015-04-01	-0.10142