Quarter	Billions of US Dollars
1993-07-01	0.17263
1993-10-01	0.17291
1994-01-01	0.17369
1994-04-01	0.10700
2008-04-01	0.00340
2008-07-01	0.02366
2008-10-01	0.02283
2014-01-01	0.03551
2014-04-01	0.03549
2014-07-01	0.03472
2014-10-01	0.03415
2015-01-01	0.03331
2015-04-01	0.03331