Quarter	Billions of US Dollars
1992-07-01	0.00500
1992-10-01	0.00200
1993-01-01	0.00500
1997-04-01	0.01188
1997-07-01	0.00939
1999-04-01	0.02700
1999-07-01	0.04100
1999-10-01	0.00300
2000-01-01	0.01380
2000-04-01	0.10000
2000-07-01	0.10000
2000-10-01	0.18000
2001-01-01	0.18000
2001-04-01	0.08000
2001-07-01	0.08850
2001-10-01	0.00850
2002-01-01	0.00850
2002-04-01	0.00850
2002-07-01	0.00850
2002-10-01	0.00600
2003-01-01	0.00600
2003-04-01	0.00600
2003-07-01	0.00300
2003-10-01	0.00100
2004-01-01	0.00100
2014-07-01	0.04886
2014-10-01	0.04572
2015-01-01	0.04581
2015-04-01	0.17698