Quarter	Billions of US Dollars
1993-07-01	0.20000
1996-10-01	0.04000
1998-01-01	0.33110
1998-04-01	0.18500
1998-07-01	0.43632
1998-10-01	0.03677
1999-01-01	0.09293
1999-04-01	0.22507
1999-07-01	0.10185
1999-10-01	0.15830
2000-01-01	0.06104
2000-04-01	0.61103
2000-07-01	0.14361
2001-04-01	0.16190
2001-07-01	0.50000
2002-07-01	0.12922
2003-01-01	0.00103
2003-04-01	0.00090
2003-07-01	0.00037
2003-10-01	0.00059
2004-01-01	0.02701
2005-04-01	0.40500
2005-10-01	0.40961
2006-10-01	0.71000
2007-04-01	1.02500
2008-01-01	0.57500
2008-07-01	0.40000
2009-01-01	1.62500
2009-04-01	1.40848
2009-10-01	0.28500
2010-01-01	0.25000
2010-04-01	0.00530
2010-07-01	0.50000
2010-10-01	0.58750
2011-01-01	0.42500
2011-04-01	0.73749
2011-07-01	0.18000
2011-10-01	0.72861
2012-01-01	0.40000
2012-04-01	1.72500
2012-07-01	0.99500
2013-01-01	0.60000
2013-04-01	1.36927
2013-07-01	1.05090
2013-10-01	0.40000
2014-01-01	0.50000
2014-04-01	0.51290
2014-10-01	0.30140
2015-01-01	0.30000
2015-04-01	0.33225