Quarter	Billions of US Dollars
1993-07-01	0.15494
1993-10-01	0.15400
1994-01-01	0.22605
1994-04-01	0.18350
1994-07-01	0.25000
1994-10-01	0.23900
1995-01-01	0.24178
1995-04-01	0.24200
1995-07-01	0.23762
1995-10-01	0.34000
1996-01-01	0.27551
1996-04-01	0.16551
1996-07-01	0.31540
1996-10-01	0.31010
1997-01-01	0.29230
1997-04-01	0.25550
1997-07-01	0.28231
1997-10-01	0.13750
1998-01-01	0.18850
1998-04-01	0.23000
1998-07-01	0.25202
1998-10-01	0.06150
1999-01-01	0.05768
1999-04-01	0.26400
1999-07-01	0.24835
1999-10-01	0.14250
2000-01-01	0.16501
2000-04-01	0.13500
2000-07-01	0.13467
2000-10-01	0.12984
2001-01-01	0.16550
2001-04-01	0.06850
2005-07-01	0.80386
2005-10-01	1.10071
2006-01-01	1.97706
2006-04-01	1.10693
2006-07-01	2.62635
2006-10-01	4.33530
2007-01-01	4.46907
2007-04-01	4.04020
2007-07-01	3.45305
2007-10-01	2.73358
2008-01-01	4.25126
2008-04-01	3.06941
2008-07-01	3.45198
2008-10-01	0.22686
2009-01-01	0.80721
2009-04-01	0.97733
2009-07-01	1.17764
2009-10-01	0.83084
2010-01-01	0.31656
2010-04-01	0.18610
2010-07-01	0.18805
2010-10-01	0.13439
2011-01-01	0.31847
2011-04-01	0.25287
2011-07-01	0.60930
2011-10-01	0.20189
2012-01-01	1.61200
2012-04-01	1.92803
2012-07-01	1.82600
2012-10-01	1.58767
2013-01-01	2.39306
2013-04-01	2.62035
2013-07-01	2.76877
2013-10-01	3.00562
2014-01-01	3.03443
2014-04-01	3.65719
2014-07-01	3.59198
2014-10-01	2.78594
2015-01-01	3.11171
2015-04-01	4.07814