Quarter	Billions of US Dollars
1993-10-01	0.01600
1994-04-01	0.02000
1994-07-01	0.02000
1994-10-01	0.02000
1995-10-01	0.03335
1996-01-01	0.02870
1996-04-01	0.07000
1996-07-01	0.05000
1998-01-01	0.04722
1998-10-01	0.00901
1999-01-01	0.01085
1999-04-01	0.00518
1999-07-01	0.01139
1999-10-01	0.01019
2000-01-01	0.03220
2000-04-01	0.03686
2000-07-01	0.02254
2000-10-01	0.00934
2001-04-01	0.01373
2001-10-01	0.01395
2002-01-01	0.01753
2002-04-01	0.02337
2002-07-01	0.03342
2003-01-01	0.02829
2003-04-01	0.01000
2003-07-01	0.02411
2003-10-01	0.02094
2004-01-01	0.08502
2004-04-01	0.03973
2004-07-01	0.01222
2005-07-01	0.00201
2006-07-01	0.04346
2006-10-01	0.10351
2007-01-01	0.03832
2007-04-01	0.06677
2007-07-01	0.09830
2007-10-01	0.08658
2008-01-01	0.04932
2008-04-01	0.04531
2008-07-01	0.28033
2011-07-01	0.00700
2011-10-01	0.12246
2012-01-01	0.02000
2012-04-01	0.16891
2012-07-01	0.14980
2012-10-01	0.09505
2013-01-01	0.04640
2013-04-01	0.61998
2013-07-01	1.05525
2013-10-01	0.90643
2014-01-01	1.23113
2014-04-01	2.04209
2014-07-01	2.26891
2014-10-01	2.29058
2015-01-01	2.03472
2015-04-01	1.75378