Quarter	Billions of US Dollars
1999-10-01	0.09530
2000-04-01	0.10892
2001-04-01	-0.10892
2002-10-01	-0.09530
2006-07-01	0.59922
2006-10-01	0.38115
2007-01-01	0.33438
2007-04-01	-0.03404
2007-07-01	0.03485
2007-10-01	3.15551
2008-01-01	2.01282
2008-04-01	8.13831
2008-07-01	1.73750
2008-10-01	-0.40416
2009-01-01	-0.82369
2009-04-01	0.33379
2009-07-01	0.14568
2009-10-01	-0.32185
2010-01-01	-0.17042
2010-04-01	-0.98026
2010-07-01	0.22750
2010-10-01	0.18779
2011-01-01	0.62652
2011-04-01	-2.23232
2011-07-01	0.81264
2011-10-01	-0.20971
2012-01-01	-1.18036
2012-04-01	-1.98073
2012-07-01	-0.11056
2012-10-01	0.00019
2013-01-01	-0.64356
2013-04-01	-4.60350
2013-07-01	-0.90199
2013-10-01	-0.03716
2014-01-01	-0.18588
2014-04-01	0.07755
2014-07-01	-0.00399
2014-10-01	-0.67825
2015-01-01	-1.08504
2015-04-01	0.13615