Quarter	Billions of US Dollars
1998-07-01	0.02429
2001-07-01	-0.01116
2004-01-01	0.01952
2004-04-01	0.09376
2004-07-01	0.00065
2004-10-01	0.26886
2005-01-01	0.77042
2005-04-01	0.94636
2005-07-01	2.11950
2005-10-01	1.10813
2006-01-01	1.21348
2006-04-01	0.46557
2006-07-01	0.94052
2006-10-01	2.02867
2007-01-01	2.43078
2007-04-01	4.32011
2007-07-01	0.92896
2007-10-01	-0.13269
2008-01-01	0.79449
2008-04-01	0.61057
2008-07-01	0.19615
2008-10-01	-0.29106
2009-01-01	-0.43649
2009-04-01	-0.70142
2009-07-01	1.55032
2009-10-01	0.56100
2010-01-01	1.32216
2010-04-01	2.57493
2010-07-01	2.11090
2010-10-01	4.00090
2011-01-01	4.05263
2011-04-01	6.64321
2011-07-01	4.59755
2011-10-01	1.26878
2012-01-01	0.75017
2012-04-01	2.86588
2012-07-01	0.78906
2012-10-01	1.36543
2013-01-01	1.90739
2013-04-01	1.84880
2013-07-01	2.24231
2013-10-01	0.89177
2014-01-01	0.07925
2014-04-01	1.94152
2014-07-01	0.48334
2014-10-01	0.11637
2015-01-01	-0.36139
2015-04-01	-0.74843