Quarter	Billions of US Dollars
1996-01-01	0.03000
1996-04-01	0.03000
1996-07-01	0.03000
1996-10-01	0.03000
1997-04-01	0.01188
1997-07-01	0.00939
1998-01-01	0.06000
1998-04-01	0.06000
1998-07-01	0.16000
1998-10-01	0.16000
1999-01-01	0.10000
1999-04-01	0.10000
1999-10-01	0.01200
2000-01-01	0.01780
2000-04-01	0.05000
2000-07-01	0.15000
2000-10-01	0.23000
2001-01-01	0.23000
2001-04-01	0.58806
2001-07-01	0.60911
2001-10-01	0.64586
2002-01-01	0.64188
2002-04-01	0.31150
2002-07-01	0.15650
2002-10-01	0.95000
2003-04-01	0.00956
2003-07-01	0.10956
2003-10-01	0.25450
2004-01-01	0.50450
2004-04-01	0.49494
2004-07-01	0.39494
2004-10-01	0.29950
2005-01-01	0.03950
2005-04-01	0.10037
2005-07-01	0.10055
2005-10-01	0.62409
2006-01-01	0.72400
2006-04-01	1.48881
2006-07-01	2.48334
2006-10-01	1.97471
2007-01-01	2.03989
2007-04-01	1.13000
2007-07-01	0.15000
2007-10-01	0.75000
2008-01-01	0.99500
2008-04-01	2.47730
2008-07-01	3.15273
2008-10-01	3.35850
2009-01-01	2.91783
2009-04-01	1.71473
2009-07-01	0.92973
2009-10-01	0.35527
2010-01-01	0.45527
2010-04-01	1.23027
2010-07-01	1.23027
2010-10-01	1.34000
2011-01-01	1.24000
2011-04-01	3.37000
2011-07-01	4.32000
2011-10-01	3.95000
2012-01-01	5.10000
2012-04-01	2.10000
2012-07-01	1.15000
2012-10-01	1.15000
2013-01-01	0.14604
2013-04-01	0.64604
2013-07-01	3.21399
2013-10-01	3.29714
2014-01-01	4.04412
2014-04-01	3.89409
2014-07-01	2.84653
2014-10-01	2.74482
2015-01-01	3.23229
2015-04-01	3.10218