Quarter	Billions of US Dollars
1990-07-01	0.43490
1992-04-01	0.01550
1993-01-01	0.30000
1993-07-01	0.32410
1994-01-01	0.00003
1994-04-01	0.25000
1995-01-01	0.07290
1996-07-01	0.04597
1996-10-01	0.04879
1997-04-01	0.25000
1998-10-01	0.20000
1999-04-01	0.20913
2001-07-01	0.05340
2001-10-01	0.91383
2002-04-01	0.42806
2003-01-01	0.18244
2003-10-01	0.15000
2004-04-01	2.01588
2004-07-01	0.12445
2004-10-01	0.40282
2005-01-01	1.31481
2006-07-01	0.27489
2006-10-01	0.63339
2007-01-01	0.28060
2007-04-01	0.22918
2007-07-01	0.06871
2007-10-01	0.86960
2008-01-01	0.14986
2008-04-01	3.20179
2008-07-01	1.20393
2009-01-01	0.19527
2009-04-01	3.15259
2009-07-01	0.15726
2009-10-01	2.68960
2010-01-01	0.20903
2010-04-01	2.52068
2010-07-01	3.03452
2010-10-01	0.69005
2011-01-01	0.60437
2011-04-01	1.68364
2011-07-01	0.21335
2011-10-01	0.06752
2012-01-01	4.24938
2012-04-01	0.27105
2012-07-01	0.66505
2012-10-01	4.88513
2013-01-01	0.04092
2013-04-01	3.05096
2013-07-01	0.29091
2013-10-01	1.22498
2014-01-01	1.31755
2014-04-01	0.36346
2014-07-01	0.87899
2014-10-01	1.18601
2015-01-01	0.47080
2015-04-01	0.39755