Quarter	Billions of US Dollars
1993-07-01	0.02000
1994-01-01	0.14626
1994-04-01	0.00768
1994-07-01	0.12638
1994-10-01	0.09453
1995-01-01	0.05212
1995-04-01	0.07375
1995-07-01	0.11874
1995-10-01	0.10434
1996-01-01	0.13581
1996-04-01	0.25334
1996-07-01	0.25313
1996-10-01	0.28021
1997-01-01	0.50214
1997-04-01	0.45890
1997-07-01	0.85755
1997-10-01	0.30036
1998-01-01	0.29813
1998-04-01	0.15069
1998-07-01	0.13143
1998-10-01	0.50049
1999-01-01	1.02534
1999-04-01	0.62947
1999-07-01	0.42122
1999-10-01	1.29920
2000-01-01	0.14703
2000-04-01	0.04667
2000-07-01	0.10354
2000-10-01	0.42441
2001-01-01	0.15893
2001-04-01	0.30658
2001-07-01	0.39306
2001-10-01	0.40326
2002-01-01	0.00725
2002-04-01	0.49766
2002-07-01	0.01039
2002-10-01	0.27501
2003-01-01	0.10731
2003-07-01	0.12240
2003-10-01	0.30770
2004-01-01	0.12635
2004-04-01	0.00041
2004-07-01	0.25368
2004-10-01	0.04413
2005-01-01	0.03422
2005-04-01	0.00759
2005-07-01	0.03000
2005-10-01	0.06800
2006-01-01	0.03400
2006-04-01	0.04750
2006-07-01	0.04800
2006-10-01	0.06175
2007-01-01	0.05547
2007-04-01	0.09236
2007-07-01	0.02150
2007-10-01	0.05170
2008-01-01	0.04798
2008-04-01	0.03826
2008-07-01	0.03527
2008-10-01	0.03000
2009-01-01	0.03045
2009-04-01	0.01613
2009-07-01	0.03098
2009-10-01	0.03240
2010-01-01	0.03205
2010-04-01	0.00017
2010-07-01	0.00013
2010-10-01	0.00494
2011-01-01	0.00380
2011-04-01	0.02270
2011-07-01	0.01467
2011-10-01	0.00031
2012-01-01	0.00325
2012-04-01	0.00106
2012-10-01	0.00073
2013-01-01	0.00379
2013-04-01	0.01091
2013-07-01	0.00205
2013-10-01	0.01810
2014-01-01	0.05982
2014-04-01	0.00082
2014-07-01	0.00501
2014-10-01	0.01515
2015-01-01	0.19929
2015-04-01	1.00749