Quarter	Billions of US Dollars
1993-07-01	0.19575
1993-10-01	0.22575
1994-01-01	0.17000
1994-04-01	0.15500
1994-07-01	0.15500
1994-10-01	0.06000
1996-01-01	0.01650
1996-04-01	0.01650
1996-07-01	0.01650
1996-10-01	0.10000
1997-01-01	0.10000
1997-04-01	0.25000
1997-07-01	0.25000
1997-10-01	0.15000
1998-01-01	0.15000
2000-04-01	0.10000
2000-07-01	0.10000
2000-10-01	0.10000
2001-01-01	0.10000
2001-07-01	0.10992
2001-10-01	0.11568
2002-01-01	0.18655
2002-04-01	0.57670
2002-07-01	0.74751
2002-10-01	1.03825
2003-01-01	0.97300
2003-04-01	0.59661
2003-07-01	0.84832
2003-10-01	0.56788
2004-01-01	0.25321
2004-04-01	0.50183
2004-07-01	0.44471
2004-10-01	0.44471
2005-01-01	0.90152
2005-04-01	0.65152
2005-07-01	0.85681
2005-10-01	0.85681
2006-01-01	0.41649
2006-04-01	0.41649
2006-07-01	0.02554
2006-10-01	0.27554
2007-01-01	0.26810
2007-04-01	0.38810
2007-07-01	0.38927
2007-10-01	0.13927
2008-01-01	0.13970
2008-04-01	0.35970
2008-07-01	0.49885
2008-10-01	0.49885
2009-01-01	0.49917
2009-04-01	0.15917
2009-07-01	0.32024
2009-10-01	0.32024
2010-01-01	0.37725
2010-04-01	0.57640
2010-07-01	0.67815
2010-10-01	0.69818
2011-01-01	0.93088
2011-04-01	0.73088
2011-07-01	0.33996
2011-10-01	1.15280
2012-01-01	1.36018
2012-04-01	1.65280
2012-07-01	1.14118
2012-10-01	0.80005
2013-01-01	0.95005
2013-04-01	0.65005
2013-07-01	0.65000
2013-10-01	0.76670
2014-01-01	0.61670
2014-04-01	1.03070
2014-07-01	1.12732
2014-10-01	0.50233
2015-01-01	0.49978
2015-04-01	0.28296