Quarter	Billions of US Dollars
1993-07-01	0.42980
1993-10-01	0.31620
1994-01-01	0.60594
1994-04-01	0.63378
1994-07-01	0.51982
1994-10-01	0.58792
1995-01-01	0.65043
1995-04-01	0.79497
1995-07-01	1.33051
1995-10-01	1.58123
1996-01-01	1.55426
1996-04-01	1.51404
1996-07-01	1.11811
1996-10-01	1.10507
1997-01-01	1.37070
1997-04-01	1.68301
1997-07-01	1.47988
1997-10-01	1.71025
1998-01-01	1.61674
1998-04-01	1.32404
1998-07-01	2.10504
1998-10-01	2.32668
1999-01-01	2.16311
1999-04-01	2.53827
1999-07-01	2.24389
1999-10-01	1.94538
2000-01-01	0.99385
2000-04-01	0.82641
2000-07-01	0.44644
2000-10-01	0.85061
2001-01-01	1.32999
2001-04-01	1.20531
2001-07-01	1.47103
2001-10-01	0.92857
2002-01-01	0.86908
2002-04-01	1.36001
2002-07-01	1.81464
2002-10-01	2.08356
2003-01-01	2.95437
2003-04-01	2.36789
2003-07-01	1.84069
2003-10-01	1.73734
2004-01-01	0.39249
2004-04-01	0.38261
2004-07-01	0.72072
2004-10-01	1.11656
2005-01-01	0.84376
2005-04-01	1.35146
2005-07-01	0.84974
2005-10-01	0.53087
2006-01-01	0.54468
2006-10-01	0.25221
2007-01-01	0.46749
2007-04-01	0.44632
2007-07-01	0.48514
2007-10-01	0.25610
2008-01-01	1.22543
2008-04-01	1.18230
2008-07-01	1.45318
2008-10-01	1.32211
2009-01-01	1.59696
2009-04-01	1.88775
2009-07-01	2.66373
2009-10-01	2.97931
2010-01-01	2.61840
2010-04-01	2.32893
2010-07-01	3.68007
2010-10-01	4.96737
2011-01-01	4.08728
2011-04-01	3.98434
2011-07-01	2.64925
2011-10-01	0.78617
2012-01-01	0.70116
2012-04-01	0.12590
2012-10-01	1.84925
2013-01-01	1.88105
2013-04-01	2.36008
2013-07-01	3.44152
2013-10-01	1.85956
2014-01-01	1.96203
2014-04-01	1.54335
2014-07-01	1.12499
2014-10-01	0.92544
2015-01-01	0.14153
2015-04-01	0.65556