Quarter	Billions of US Dollars
1993-07-01	5.72048
1993-10-01	6.07972
1994-01-01	6.89909
1994-04-01	5.46819
1994-07-01	5.75838
1994-10-01	5.78760
1995-01-01	1.07495
1995-04-01	2.31370
1995-07-01	2.81548
1995-10-01	3.30972
1996-01-01	3.09777
1996-04-01	4.93768
1996-07-01	2.94993
1996-10-01	2.68227
1997-01-01	1.96049
1997-04-01	1.89464
1997-07-01	3.28666
1997-10-01	1.53794
1998-01-01	5.01412
1998-04-01	2.13980
1998-07-01	1.52878
1998-10-01	1.03629
1999-01-01	1.46075
1999-04-01	2.55213
1999-07-01	1.73629
1999-10-01	2.23767
2000-01-01	1.76805
2000-04-01	2.76273
2000-07-01	2.04069
2000-10-01	1.15413
2001-01-01	1.46044
2001-04-01	1.43559
2001-07-01	1.01648
2001-10-01	1.64701
2002-01-01	1.44160
2002-04-01	1.13153
2002-07-01	1.11432
2002-10-01	1.72242
2003-01-01	3.03268
2003-04-01	2.05856
2003-07-01	2.33106
2003-10-01	1.12419
2004-01-01	1.24312
2004-04-01	1.09002
2004-07-01	1.16827
2004-10-01	1.41801
2005-01-01	1.31558
2005-04-01	0.96638
2005-07-01	1.16108
2005-10-01	1.17527
2006-01-01	1.37293
2006-04-01	1.65317
2006-07-01	1.69314
2006-10-01	1.42438
2007-01-01	0.40313
2007-04-01	0.79701
2007-07-01	0.10839
2007-10-01	0.96450
2008-01-01	0.13153
2008-04-01	0.84977
2008-07-01	0.57684
2008-10-01	0.12945
2009-01-01	0.32630
2009-04-01	0.14034
2009-07-01	0.52833
2009-10-01	0.46024
2010-01-01	0.43337
2010-04-01	0.62521
2010-07-01	1.07487
2010-10-01	0.92944
2011-01-01	0.93263
2011-04-01	0.64865
2011-07-01	0.13872
2011-10-01	0.29594
2012-01-01	0.51230
2012-04-01	0.24426
2012-07-01	0.48443
2012-10-01	1.24643
2013-01-01	0.98392
2013-04-01	0.21997
2013-07-01	0.04248
2013-10-01	0.22537
2014-01-01	0.07586
2014-04-01	0.01013
2014-07-01	0.21673
2014-10-01	0.07589
2015-01-01	0.07864
2015-04-01	0.05615