Quarter	Billions of US Dollars
1989-04-01	-0.02585
1990-07-01	0.34070
1991-07-01	-0.02500
1994-04-01	0.12300
1994-07-01	-0.12300
1994-10-01	1.01500
1995-10-01	-0.38231
1996-10-01	0.09285
1997-04-01	0.05500
1997-07-01	0.06081
1998-04-01	-0.73668
1998-07-01	0.50402
1998-10-01	0.15000
1999-01-01	0.03000
1999-04-01	0.59230
1999-07-01	0.58305
1999-10-01	-0.00745
2000-01-01	-0.06100
2000-04-01	-0.03064
2000-07-01	0.16869
2000-10-01	-0.02309
2001-01-01	0.60038
2001-04-01	-0.74949
2001-07-01	0.05103
2001-10-01	0.11398
2002-01-01	0.00423
2002-04-01	-0.06901
2002-07-01	0.12719
2002-10-01	-0.14533
2003-01-01	-0.26088
2003-04-01	0.27773
2003-07-01	-0.07882
2003-10-01	-0.55650
2004-01-01	-0.30074
2004-04-01	0.21062
2004-07-01	0.41952
2004-10-01	-0.29211
2005-01-01	-0.30745
2005-04-01	0.09680
2005-07-01	0.26437
2005-10-01	0.24107
2006-01-01	0.03582
2006-04-01	0.01131
2006-07-01	-0.51420
2006-10-01	-0.24937
2007-01-01	0.46387
2007-04-01	1.78764
2007-07-01	-0.32295
2007-10-01	0.61742
2008-01-01	-0.25927
2008-04-01	0.53180
2008-07-01	0.28464
2008-10-01	0.05574
2009-01-01	-0.22980
2009-04-01	0.72846
2009-07-01	0.00572
2009-10-01	0.31378
2010-01-01	0.27942
2010-04-01	0.01495
2010-07-01	-0.03500
2010-10-01	-0.00800
2011-01-01	0.77519
2011-07-01	0.90655
2011-10-01	1.48909
2012-01-01	1.74296
2012-04-01	1.21747
2012-07-01	-0.06000
2012-10-01	0.12228
2013-01-01	1.91971
2013-04-01	-1.39754
2013-07-01	0.80776
2013-10-01	-0.33274
2014-01-01	-0.37973
2014-04-01	1.38162
2014-07-01	2.45513
2014-10-01	0.67894
2015-01-01	-0.11572
2015-04-01	0.77153