Quarter	Billions of US Dollars
1989-07-01	-0.06809
1989-10-01	-0.17000
1990-01-01	-0.00708
1991-07-01	-0.06000
1993-07-01	0.06554
1993-10-01	0.00831
1994-01-01	-0.01368
1994-04-01	-0.03043
1994-07-01	-0.00074
1995-01-01	-0.00449
1995-04-01	0.03000
1995-07-01	-0.03036
1997-01-01	0.37582
1997-04-01	0.01500
1997-07-01	0.06837
1997-10-01	-0.00870
1998-01-01	0.03400
1998-04-01	0.20634
1998-07-01	0.03544
1998-10-01	0.02389
1999-01-01	-0.03554
1999-04-01	0.04062
1999-07-01	0.80885
1999-10-01	0.05920
2000-01-01	-0.13724
2000-04-01	0.48926
2000-07-01	0.07696
2000-10-01	0.06028
2001-01-01	0.00921
2001-04-01	0.97401
2001-07-01	1.93196
2001-10-01	-0.20045
2002-01-01	0.21804
2002-04-01	0.09950
2002-07-01	0.27155
2002-10-01	0.10746
2003-01-01	0.04758
2003-04-01	1.20491
2003-07-01	0.09888
2003-10-01	0.19771
2004-01-01	0.47807
2004-04-01	0.82667
2004-07-01	1.19075
2004-10-01	1.43595
2005-01-01	0.13118
2005-04-01	-0.27374
2005-07-01	1.06634
2005-10-01	-0.35140
2006-01-01	-1.22696
2006-04-01	1.76114
2006-07-01	-0.13109
2006-10-01	-0.09909
2007-01-01	-0.10062
2007-04-01	1.99303
2007-07-01	0.24946
2007-10-01	-0.27108
2008-01-01	0.42360
2008-04-01	0.75739
2008-07-01	-0.26996
2008-10-01	-0.56417
2009-01-01	-0.55679
2009-04-01	-1.43504
2009-07-01	-0.43269
2009-10-01	0.18542
2010-01-01	0.30797
2010-04-01	-0.61319
2010-07-01	1.51989
2010-10-01	0.40894
2011-01-01	1.96315
2011-04-01	1.05173
2011-07-01	1.80293
2011-10-01	2.44392
2012-01-01	4.56016
2012-04-01	-1.68050
2012-07-01	1.34275
2012-10-01	1.04315
2013-01-01	2.17745
2013-04-01	4.50102
2013-07-01	4.40581
2013-10-01	3.44500
2014-01-01	-1.06639
2014-04-01	2.73007
2014-07-01	1.91689
2014-10-01	-3.47802
2015-01-01	-3.85298
2015-04-01	0.48826