Quarter	Billions of US Dollars
2005-10-01	0.26321
2006-10-01	0.11056
2007-01-01	0.35476
2007-04-01	1.59178
2007-07-01	1.97285
2007-10-01	0.52763
2008-01-01	0.62690
2008-04-01	0.28623
2008-07-01	2.20916
2008-10-01	0.00082
2009-01-01	0.36703
2009-04-01	0.14694
2009-07-01	1.22428
2009-10-01	1.02636
2010-01-01	0.31242
2010-04-01	0.07501
2010-07-01	-0.25771
2010-10-01	4.39550
2011-01-01	5.28577
2011-04-01	6.58965
2011-07-01	4.17522
2011-10-01	3.15704
2012-01-01	3.94337
2012-04-01	9.19260
2012-07-01	4.65539
2012-10-01	2.87931
2013-01-01	2.59943
2013-04-01	3.59207
2013-07-01	0.88193
2013-10-01	4.68004
2014-01-01	5.21010
2014-04-01	5.50671
2014-07-01	3.26860
2014-10-01	9.92155
2015-01-01	3.46141
2015-04-01	0.85897