Quarter	Billions of US Dollars
1993-07-01	0.41941
1993-10-01	0.34921
1994-01-01	0.36791
1994-04-01	0.21245
1994-07-01	0.06950
1994-10-01	0.04650
1995-01-01	0.03150
1995-04-01	0.02250
1995-07-01	0.02250
1995-10-01	0.01250
1996-01-01	0.01250
1996-04-01	0.01750
1996-07-01	0.00500
1996-10-01	0.00250
1997-01-01	0.02250
1997-04-01	0.02250
1997-07-01	0.08750
1997-10-01	0.08250
1998-01-01	0.07750
1998-04-01	0.08250
1998-07-01	0.00750
1998-10-01	0.00750
1999-01-01	0.00500
1999-04-01	0.01500
1999-07-01	0.01500
1999-10-01	0.01500
2000-01-01	0.01500
2000-04-01	0.02000
2000-07-01	0.07500
2000-10-01	0.07500
2001-01-01	0.07500
2001-04-01	0.07000
2001-07-01	0.22000
2001-10-01	0.24000
2002-01-01	0.22500
2002-04-01	0.22000
2002-07-01	0.00500
2003-04-01	0.01000
2003-07-01	0.02000
2003-10-01	0.02000
2004-01-01	0.03000
2004-04-01	0.02000
2004-10-01	0.01350
2005-01-01	0.03350
2005-04-01	0.01350
2005-07-01	0.03350
2005-10-01	0.02000
2006-01-01	0.02000
2006-04-01	0.34500
2006-07-01	0.35500
2006-10-01	0.33500
2007-01-01	0.33500
2007-04-01	0.01000
2007-10-01	0.07500
2008-01-01	0.10000
2008-04-01	0.30500
2008-07-01	0.27700
2008-10-01	0.27700
2009-01-01	0.28900
2009-04-01	0.61860
2009-07-01	0.57595
2009-10-01	0.97882
2010-01-01	1.63025
2010-04-01	1.11330
2010-07-01	1.41330
2010-10-01	1.01330
2011-01-01	0.87987
2011-04-01	1.52657
2011-07-01	1.22657
2011-10-01	1.22657
2012-01-01	0.80670
2012-04-01	0.14670
2012-07-01	0.14670
2012-10-01	0.16452
2013-01-01	0.01782
2013-04-01	0.01782
2013-07-01	0.01782
2013-10-01	0.41000
2014-01-01	0.51000
2014-04-01	0.51000
2014-07-01	0.88566
2014-10-01	0.97866
2015-01-01	0.87866
2015-04-01	0.87866