Quarter	Billions of US Dollars
1991-04-01	0.08700
1994-10-01	0.01000
1995-01-01	0.02000
1995-07-01	0.00500
1995-10-01	-0.01000
1997-01-01	-0.02000
1997-07-01	-0.00500
1999-01-01	0.00750
1999-04-01	0.05284
1999-07-01	-0.02347
1999-10-01	0.05450
2000-01-01	-0.00206
2000-04-01	0.08961
2000-07-01	0.00630
2000-10-01	0.55340
2001-01-01	0.36842
2001-04-01	1.35723
2001-07-01	0.94186
2001-10-01	0.40357
2002-01-01	0.22262
2002-04-01	0.58181
2002-07-01	-1.32237
2002-10-01	0.29526
2003-01-01	-0.13625
2003-04-01	0.10159
2003-07-01	0.24148
2003-10-01	0.05971
2004-01-01	-0.07976
2004-04-01	-0.03139
2004-07-01	-0.41824
2004-10-01	-0.54802
2005-01-01	0.12211
2005-04-01	0.03747
2005-07-01	0.18416
2005-10-01	0.01206
2006-01-01	0.03692
2006-04-01	-0.08544
2006-07-01	-0.91134
2006-10-01	-0.10761
2007-01-01	-0.23439
2007-04-01	-0.00698
2007-07-01	0.68511
2007-10-01	-0.39565
2008-01-01	-0.05163
2008-04-01	-0.00078
2008-07-01	-0.32494
2008-10-01	-0.06909
2009-01-01	-0.08730
2009-04-01	-0.12049
2009-07-01	-0.08201
2009-10-01	-0.11329
2010-01-01	-0.21461
2010-04-01	-0.03005
2010-07-01	-0.08929
2010-10-01	-0.17404
2011-01-01	-0.20225
2011-04-01	-0.20261
2011-07-01	-0.05776
2011-10-01	-0.01351
2012-01-01	-0.16398
2012-04-01	-0.08440
2012-07-01	-0.00014
2012-10-01	-0.02866
2013-01-01	-5.89814
2013-04-01	-0.46621
2013-07-01	-9.09887
2013-10-01	-0.00418
2014-01-01	-9.24297
2014-04-01	0.00094
2014-07-01	-9.19744
2014-10-01	-0.05107
2015-01-01	-0.10070
2015-04-01	-0.00230