Quarter	Billions of US Dollars
2008-10-01	0.11134
2009-01-01	0.10646
2009-04-01	0.11307
2009-07-01	0.11714
2011-07-01	2.70060
2011-10-01	2.58780
2012-01-01	2.67120
2012-04-01	2.51800
2012-07-01	0.11403
2012-10-01	0.11636
2013-01-01	0.11293
2013-04-01	0.11536
2013-10-01	0.06895
2014-01-01	0.06894
2014-04-01	1.84383
2014-07-01	1.69871
2014-10-01	1.57833
2015-01-01	1.61385
2015-04-01	0.22378