Quarter	Billions of US Dollars
2005-04-01	0.0233
2005-07-01	0.0775
2005-10-01	0.7116
2006-01-01	0.7891
2006-04-01	0.9074
2006-07-01	0.9934
2006-10-01	1.1412
2007-01-01	1.2414
2007-04-01	1.3384
2007-07-01	1.4050
2007-10-01	1.4589
2008-01-01	1.5752
2008-04-01	1.5671
2008-07-01	1.4245
2008-10-01	1.3950
2009-01-01	1.3307
2009-04-01	1.4122
2009-07-01	1.4651
2009-10-01	1.4436
2010-01-01	1.3563
2010-04-01	1.2458
2010-07-01	1.3854
2010-10-01	1.3656
2011-01-01	1.4664
2011-04-01	1.5050
2011-07-01	3.2287
2011-10-01	3.7871
2012-01-01	8.7148
2012-04-01	9.5110
2012-07-01	11.2162
2012-10-01	11.7388
2013-01-01	12.0529
2013-04-01	11.7847
2013-07-01	11.3818
2013-10-01	10.5951
2014-01-01	10.0550
2014-04-01	10.2340
2014-07-01	9.5940
2014-10-01	9.2316
2015-01-01	8.7690
2015-04-01	8.5280