Quarter	Billions of US Dollars
1972-10-01	0.0450
1973-01-01	0.0150
1981-07-01	0.0300
1982-10-01	0.0500
1983-01-01	0.0208
1983-07-01	0.0212
1984-04-01	0.1500
1984-07-01	0.0266
1984-10-01	0.0042
1985-01-01	0.2973
1985-04-01	0.1623
1985-07-01	0.2828
1986-04-01	0.0297
1986-07-01	0.0534
1986-10-01	-0.1800
1987-01-01	0.1140
1987-04-01	0.1696
1987-07-01	0.0829
1987-10-01	-0.0250
1988-01-01	0.1655
1988-04-01	0.1198
1988-07-01	0.1496
1989-01-01	0.4865
1989-04-01	0.1527
1989-10-01	0.4389
1990-01-01	0.1111
1990-07-01	0.5375
1990-10-01	0.2273
1991-01-01	1.3993
1991-04-01	0.7077
1991-07-01	-0.0474
1991-10-01	0.3768
1992-01-01	0.5469
1992-04-01	0.8094
1992-07-01	0.5065
1992-10-01	0.6129
1993-01-01	0.9669
1993-04-01	0.7606
1993-07-01	0.5262
1993-10-01	1.5745
1994-01-01	-0.3018
1994-04-01	0.5880
1994-07-01	1.2001
1994-10-01	1.8680
1995-01-01	0.1894
1995-04-01	-0.5074
1995-07-01	0.9894
1995-10-01	0.7502
1996-01-01	1.9905
1996-04-01	-0.0588
1996-07-01	1.4307
1996-10-01	0.3535
1997-01-01	-0.0590
1997-04-01	-0.5478
1997-07-01	-0.2341
1997-10-01	2.2113
1998-01-01	3.4570
1998-04-01	-0.5400
1998-07-01	-0.4113
1998-10-01	-0.3277
1999-01-01	1.4548
1999-04-01	-0.5049
1999-07-01	0.0767
1999-10-01	-0.6771
2000-01-01	1.8060
2000-04-01	0.1835
2000-07-01	-0.0659
2000-10-01	-0.2857
2001-01-01	-0.3019
2001-04-01	0.0936
2001-07-01	0.4092
2001-10-01	0.8213
2002-01-01	4.8133
2002-04-01	-0.0313
2002-07-01	-0.2263
2002-10-01	-0.8925
2003-01-01	9.0566
2003-04-01	1.2176
2003-07-01	0.0979
2003-10-01	-0.5438
2004-01-01	-0.9395
2004-04-01	2.6624
2004-07-01	-0.5417
2004-10-01	-1.2017
2005-01-01	0.3465
2005-04-01	0.8940
2005-07-01	0.9858
2005-10-01	-0.3462
2006-01-01	5.2647
2006-04-01	2.0608
2006-07-01	2.5927
2006-10-01	5.0199
2007-01-01	7.4943
2007-04-01	-0.0392
2007-07-01	0.8213
2007-10-01	-1.3755
2008-01-01	-3.0623
2008-04-01	-3.7517
2008-07-01	-0.5211
2008-10-01	3.9149
2009-01-01	17.7521
2009-04-01	20.9555
2009-07-01	-0.0207
2009-10-01	2.7066
2010-01-01	3.4682
2010-04-01	45.3227
2010-07-01	5.8489
2010-10-01	22.9778
2011-01-01	4.8909
2011-04-01	14.0902
2011-07-01	-0.9775
2011-10-01	-3.2786
2012-01-01	-20.7362
2012-04-01	-10.2059
2012-07-01	-6.7731
2012-10-01	-0.1889
2013-01-01	-0.4508
2013-04-01	-22.0639
2013-07-01	-6.0494
2013-10-01	-10.0003
2014-01-01	-3.5816
2014-04-01	4.7599
2014-07-01	2.3575
2014-10-01	0.6151
2015-01-01	-13.3529
2015-04-01	-11.6971