Quarter	Billions of US Dollars
1997-04-01	0.01196
1997-10-01	-0.00862
1999-04-01	0.02700
1999-07-01	0.01400
1999-10-01	-0.03800
2000-01-01	0.01080
2000-04-01	0.08620
2000-10-01	0.08000
2001-04-01	-0.10000
2001-07-01	0.00850
2001-10-01	-0.08000
2002-10-01	-0.00250
2003-07-01	-0.00300
2003-10-01	-0.00200
2004-04-01	-0.00100
2008-10-01	0.01457
2009-01-01	0.03415
2009-04-01	0.20406
2009-07-01	0.20339
2009-10-01	-0.05687
2010-01-01	-0.28846
2010-04-01	0.31080
2010-07-01	-0.06986
2010-10-01	0.04260
2011-01-01	-0.07290
2011-04-01	-0.24172
2011-07-01	0.09099
2011-10-01	0.01512
2012-01-01	-0.01703
2012-04-01	0.44422
2012-07-01	0.06333
2012-10-01	-0.13315
2013-01-01	-0.09896
2013-04-01	-0.24172
2013-07-01	0.10610
2013-10-01	-0.00797
2014-01-01	-0.00653
2014-04-01	-0.18701
2014-07-01	-0.03542
2014-10-01	-0.00100
2015-04-01	0.12507