Quarter	Billions of US Dollars
2004-07-01	0.11304
2004-10-01	0.12157
2005-01-01	0.29352
2005-04-01	0.54402
2005-07-01	0.54455
2005-10-01	0.55644
2006-01-01	0.55842
2006-04-01	0.54851
2006-07-01	0.54851
2006-10-01	0.52871
2007-01-01	0.46931
2007-04-01	0.51821
2007-07-01	0.74183
2007-10-01	0.96361
2008-01-01	1.06201
2008-04-01	1.17824
2008-07-01	1.16502
2008-10-01	0.67310
2009-01-01	0.67180
2009-04-01	0.55735
2009-07-01	0.44978
2009-10-01	0.28838
2010-01-01	0.33095
2010-04-01	0.29385
2010-07-01	1.03894
2010-10-01	1.57421
2011-01-01	1.93239
2011-04-01	1.97214
2011-07-01	1.96602
2011-10-01	1.96181
2012-01-01	1.87649
2012-04-01	1.81765
2012-07-01	1.67378
2012-10-01	1.65426
2013-01-01	1.61924
2013-04-01	1.52632
2013-07-01	1.52632
2013-10-01	1.52632
2014-01-01	0.88792
2014-04-01	0.82268
2014-07-01	0.75115
2014-10-01	0.60416
2015-01-01	0.40639
2015-04-01	0.40639