Quarter	Billions of US Dollars
1993-07-01	0.03527
1993-10-01	0.03380
1994-01-01	0.08546
1994-04-01	0.55000
1994-07-01	0.55000
1994-10-01	0.55000
1995-01-01	0.03000
1995-04-01	0.08213
1995-07-01	0.08246
1995-10-01	0.08215
1996-01-01	0.09041
1996-04-01	0.15495
1996-07-01	0.18478
1996-10-01	0.36688
1997-01-01	0.72416
1997-04-01	0.54202
1997-07-01	0.52569
1997-10-01	0.56151
1998-01-01	0.42739
1998-04-01	0.57357
1998-07-01	0.52141
1998-10-01	0.83388
1999-01-01	0.59534
1999-04-01	0.69973
1999-07-01	0.25000
1999-10-01	0.30900
2000-01-01	0.64857
2000-04-01	0.53400
2000-07-01	0.53400
2000-10-01	0.22500
2001-01-01	0.22630
2001-04-01	0.09268
2001-07-01	0.09322
2001-10-01	0.09159
2002-01-01	0.01502
2002-04-01	0.15000
2002-07-01	0.15000
2002-10-01	0.15000
2003-01-01	0.25000
2003-04-01	0.10000
2003-07-01	0.10000
2003-10-01	0.10000
2005-04-01	0.06000
2005-07-01	0.06000
2005-10-01	0.06000
2006-01-01	0.06000
2007-04-01	0.30000
2007-07-01	0.30000
2007-10-01	0.45100
2008-01-01	0.45100
2008-04-01	0.15100
2008-07-01	0.15100
2009-10-01	0.05000
2010-01-01	0.66500
2010-04-01	0.66500
2010-07-01	0.66500
2010-10-01	0.61500
2011-04-01	0.32500
2011-07-01	0.32500
2011-10-01	0.47500
2012-01-01	0.47500
2012-04-01	0.50000
2012-07-01	0.50000
2012-10-01	0.35000
2013-01-01	0.35000
2013-04-01	0.40000
2013-07-01	0.87500
2013-10-01	0.87500
2014-01-01	1.00000
2014-04-01	0.98000
2014-07-01	0.50500
2014-10-01	0.50500
2015-01-01	0.43000
2015-04-01	0.13539