Quarter	Billions of US Dollars
1993-07-01	0.10120
1993-10-01	0.20961
1994-01-01	0.36224
1994-04-01	0.20157
1994-07-01	0.33341
1994-10-01	0.13946
1995-01-01	0.37035
1995-04-01	0.40138
1995-07-01	0.57766
1995-10-01	0.58153
1996-01-01	0.42056
1996-04-01	1.00316
1996-07-01	1.20006
1996-10-01	1.24374
1997-01-01	1.51832
1997-04-01	1.24361
1997-07-01	2.30658
1997-10-01	1.81506
1998-01-01	1.60151
1998-04-01	1.47077
1998-07-01	0.46994
1998-10-01	1.07430
1999-01-01	1.83155
1999-04-01	1.91758
1999-07-01	2.22218
1999-10-01	2.56168
2000-01-01	1.81619
2000-04-01	2.35725
2000-07-01	2.20750
2000-10-01	1.61624
2001-01-01	2.37547
2001-04-01	2.08774
2001-07-01	2.40028
2001-10-01	2.27579
2002-01-01	1.68801
2002-04-01	2.12515
2002-07-01	1.71282
2002-10-01	1.74668
2003-01-01	1.21201
2003-04-01	1.76858
2003-07-01	0.71671
2003-10-01	0.89030
2004-01-01	0.76706
2004-04-01	1.97485
2004-07-01	2.21657
2004-10-01	1.91926
2005-01-01	1.81795
2005-04-01	0.41119
2005-07-01	0.84274
2005-10-01	1.03161
2006-01-01	1.33554
2006-04-01	1.63680
2006-07-01	1.44196
2006-10-01	1.43199
2007-01-01	2.12659
2007-04-01	1.88691
2007-07-01	1.55985
2007-10-01	1.54220
2008-01-01	1.08442
2008-04-01	2.08466
2008-07-01	1.81876
2008-10-01	2.18701
2009-01-01	1.70606
2009-04-01	1.74393
2009-07-01	1.73543
2009-10-01	3.01438
2010-01-01	4.18821
2010-04-01	3.54960
2010-07-01	3.56608
2010-10-01	3.38740
2011-01-01	4.18179
2011-04-01	4.20465
2011-07-01	4.25112
2011-10-01	2.90268
2012-01-01	4.53252
2012-04-01	4.83672
2012-07-01	6.63778
2012-10-01	7.06574
2013-01-01	6.42983
2013-04-01	7.93365
2013-07-01	6.08636
2013-10-01	6.09841
2014-01-01	3.07135
2014-04-01	1.12627
2014-07-01	2.20304
2014-10-01	4.05355
2015-01-01	4.75460
2015-04-01	8.44750