Quarter	Billions of US Dollars
1998-10-01	0.02293
1999-01-01	0.00090
1999-04-01	0.03329
1999-10-01	0.01794
2001-04-01	0.13460
2001-07-01	0.18717
2001-10-01	0.02851
2002-01-01	0.35594
2002-04-01	0.03967
2002-07-01	0.09151
2002-10-01	0.04265
2003-01-01	0.37869
2003-04-01	0.12943
2003-07-01	0.31614
2003-10-01	0.35216
2004-01-01	1.16300
2004-04-01	0.49264
2004-07-01	0.71611
2004-10-01	0.80545
2005-01-01	0.70884
2005-04-01	0.21766
2005-07-01	0.10403
2005-10-01	0.05206
2006-01-01	0.31931
2006-04-01	0.35694
2006-07-01	0.14395
2006-10-01	0.12112
2007-01-01	0.43650
2007-04-01	0.18812
2007-07-01	0.28734
2007-10-01	0.26892
2008-01-01	0.72284
2008-04-01	0.33625
2008-07-01	0.04589
2008-10-01	0.03979
2009-01-01	0.00683
2009-04-01	0.09862
2009-07-01	0.02816
2009-10-01	0.12926
2010-01-01	0.23623
2010-04-01	0.02680
2010-07-01	0.02576
2010-10-01	0.02048
2011-01-01	0.00621
2011-04-01	0.02094
2011-07-01	0.00974
2011-10-01	0.00811
2012-01-01	0.00512
2012-04-01	0.01037
2012-07-01	0.00441
2012-10-01	0.01554
2013-01-01	0.03472
2013-04-01	0.00819
2013-07-01	0.01803
2013-10-01	0.07876
2014-01-01	0.08117
2014-04-01	0.04337
2014-07-01	0.02253
2014-10-01	0.01331
2015-01-01	0.01294
2015-04-01	0.01281