Quarter	Billions of US Dollars
1990-04-01	0.00200
1990-07-01	0.03700
1990-10-01	0.19700
1991-01-01	-0.14100
1991-04-01	-0.06500
1991-07-01	0.02400
1991-10-01	-0.00600
1992-01-01	0.01200
1992-04-01	-0.02600
1992-07-01	-0.00200
1992-10-01	-0.00600
1993-01-01	0.00100
1993-04-01	0.13000
1993-07-01	0.02233
1993-10-01	0.13426
1994-01-01	0.03325
1994-04-01	0.43193
1994-07-01	0.03586
1994-10-01	-0.38934
1995-01-01	-0.33701
1995-04-01	0.06442
1995-07-01	-0.09892
1995-10-01	0.07630
1996-01-01	0.12514
1996-04-01	-0.02735
1996-07-01	-0.16356
1996-10-01	-0.08177
1997-01-01	0.09290
1997-04-01	-0.09224
1997-07-01	0.27127
1997-10-01	-0.02422
1998-01-01	0.06660
1998-04-01	-0.14735
1998-07-01	-0.17385
1998-10-01	-0.03434
1999-01-01	0.01792
1999-04-01	0.08257
1999-07-01	0.01461
1999-10-01	0.09314
2000-01-01	-0.00080
2000-04-01	0.02499
2000-07-01	0.11304
2000-10-01	0.05446
2001-01-01	-0.02736
2001-04-01	-0.02790
2001-07-01	-0.08597
2001-10-01	0.06639
2002-01-01	-0.04168
2002-04-01	0.02131
2002-07-01	0.39479
2002-10-01	0.01013
2003-01-01	0.02521
2003-04-01	-0.11157
2003-07-01	0.07372
2003-10-01	-0.07528
2004-01-01	0.62011
2004-04-01	0.22842
2004-07-01	0.40158
2004-10-01	0.01781
2005-01-01	-0.24572
2005-04-01	0.08044
2005-07-01	0.04127
2005-10-01	0.34439
2006-01-01	0.98177
2006-04-01	0.19881
2006-07-01	-0.96512
2006-10-01	-0.60470
2007-01-01	-0.27860
2007-04-01	0.04951
2007-07-01	0.29448
2007-10-01	0.86710
2008-01-01	1.24723
2008-04-01	0.04780
2008-07-01	2.16675
2008-10-01	-2.04539
2009-01-01	-0.44671
2009-04-01	-0.60839
2009-07-01	0.37407
2009-10-01	-1.24152
2010-01-01	1.19011
2010-04-01	0.12662
2010-07-01	-0.65589
2010-10-01	-0.01622
2011-01-01	-0.83785
2011-04-01	0.23277
2011-07-01	1.97225
2011-10-01	-1.74108
2012-01-01	1.97576
2012-04-01	2.43052
2012-07-01	0.49469
2012-10-01	-3.49571
2013-01-01	-0.36946
2013-04-01	0.47795
2013-07-01	0.65155
2013-10-01	0.63111
2014-01-01	0.52775
2014-04-01	-1.20415
2014-07-01	-0.21538
2014-10-01	-1.52586
2015-01-01	-0.69422
2015-04-01	0.34118