Quarter	Billions of US Dollars
1974-10-01	0.00960
1975-10-01	0.01890
1978-04-01	0.01310
1979-10-01	0.02150
1981-01-01	0.01560
1982-04-01	0.01650
1983-01-01	0.03400
1984-04-01	0.03100
1986-01-01	-0.01517
1987-04-01	-0.02347
1988-04-01	0.06878
1988-07-01	0.02830
1988-10-01	0.02850
1989-01-01	-0.04430
1989-04-01	-0.04126
1989-10-01	-0.01556
1990-04-01	-0.00416
1990-10-01	-0.03930
1991-04-01	-0.00136
1991-10-01	-0.02440
1992-04-01	-0.00113
1993-04-01	-0.00776
1993-07-01	0.06650
1995-10-01	-0.03910
1996-07-01	-0.11856
1997-10-01	-0.06980
2002-01-01	0.03676
2002-04-01	0.02591
2002-07-01	0.00279
2002-10-01	0.03514
2003-01-01	0.01668
2003-04-01	0.00969
2003-07-01	0.00207
2003-10-01	0.00348
2004-01-01	0.00709
2004-04-01	-0.00011
2004-07-01	-0.00053
2004-10-01	0.00450
2005-01-01	0.00250
2005-04-01	-0.00054
2005-07-01	0.00286
2005-10-01	0.00129
2006-01-01	0.00226
2006-04-01	0.20594
2006-07-01	0.00061
2006-10-01	0.00319
2007-01-01	0.00210
2007-04-01	0.20730
2007-07-01	0.00313
2007-10-01	-0.05125
2008-01-01	-0.00336
2008-04-01	0.33845
2008-07-01	-0.00499
2009-01-01	0.04797
2009-04-01	0.24920
2009-07-01	-0.03494
2009-10-01	0.00000
2010-01-01	-0.16611
2010-04-01	0.18459
2010-07-01	-0.00926
2011-04-01	-0.30992
2012-04-01	-0.58730
2012-07-01	0.25895
2013-01-01	0.32841
2013-10-01	0.22109
2014-04-01	-0.33759
2015-04-01	0.20791