Quarter	Billions of US Dollars
1993-07-01	0.14813
1993-10-01	0.42858
1994-01-01	0.48628
1994-04-01	0.63789
1994-07-01	0.66150
1994-10-01	1.28361
1995-01-01	0.85387
1995-04-01	0.96771
1995-07-01	1.26678
1995-10-01	1.59184
1996-01-01	1.97172
1996-04-01	2.98487
1996-07-01	1.70900
1996-10-01	2.16930
1997-01-01	2.56041
1997-04-01	2.65951
1997-07-01	2.91948
1997-10-01	2.94917
1998-01-01	3.43401
1998-04-01	4.17818
1998-07-01	3.61453
1998-10-01	2.50306
1999-01-01	2.06183
1999-04-01	2.36106
1999-07-01	2.08652
1999-10-01	1.95654
2000-01-01	2.20390
2000-04-01	2.55716
2000-07-01	2.33923
2000-10-01	2.31874
2001-01-01	2.13381
2001-04-01	1.47522
2001-07-01	1.19170
2001-10-01	1.12868
2002-01-01	1.10287
2002-04-01	0.65134
2002-07-01	0.54176
2002-10-01	0.61672
2003-01-01	1.16806
2003-04-01	1.70557
2003-07-01	1.47344
2003-10-01	1.24732
2004-01-01	1.14163
2004-04-01	0.70266
2004-07-01	0.81361
2004-10-01	1.05747
2005-01-01	1.28935
2005-04-01	0.98775
2005-07-01	0.83885
2005-10-01	1.42551
2006-01-01	1.47855
2006-04-01	1.48140
2006-07-01	1.42771
2006-10-01	0.69947
2007-01-01	0.85801
2007-04-01	1.42839
2007-07-01	1.62790
2007-10-01	2.17888
2008-01-01	2.51265
2008-04-01	2.61661
2008-07-01	2.90045
2008-10-01	2.62507
2009-01-01	2.45757
2009-04-01	2.68602
2009-07-01	2.51303
2009-10-01	2.16306
2010-01-01	2.12799
2010-04-01	1.98738
2010-07-01	2.05599
2010-10-01	1.81579
2011-01-01	1.65914
2011-04-01	2.92273
2011-07-01	3.77511
2011-10-01	5.08218
2012-01-01	5.15308
2012-04-01	5.40566
2012-07-01	4.16589
2012-10-01	3.63612
2013-01-01	4.24333
2013-04-01	3.48787
2013-07-01	3.56655
2013-10-01	3.26041
2014-01-01	2.82146
2014-04-01	1.66836
2014-07-01	0.97533
2014-10-01	1.11289
2015-01-01	2.05808
2015-04-01	2.38910