Quarter	Billions of US Dollars
1993-07-01	0.10120
1993-10-01	0.06480
1994-01-01	0.21272
1994-04-01	0.04487
1994-07-01	0.08555
1994-10-01	0.07007
1995-01-01	0.33535
1995-04-01	0.36403
1995-07-01	0.53611
1995-10-01	0.52983
1996-01-01	0.31845
1996-04-01	0.91221
1996-07-01	1.10932
1996-10-01	1.16918
1997-01-01	1.48832
1997-04-01	1.21361
1997-07-01	2.26281
1997-10-01	1.67369
1998-01-01	1.47014
1998-04-01	1.33929
1998-07-01	0.34307
1998-10-01	1.00644
1999-01-01	1.76755
1999-04-01	1.86858
1999-07-01	2.17718
1999-10-01	2.49734
2000-01-01	1.75198
2000-04-01	2.29310
2000-07-01	2.13836
2000-10-01	1.61124
2001-01-01	2.35547
2001-04-01	2.06774
2001-07-01	2.38528
2001-10-01	2.26079
2002-01-01	1.68801
2002-04-01	2.05015
2002-07-01	1.63782
2002-10-01	1.67168
2003-01-01	1.13701
2003-04-01	1.76858
2003-07-01	0.71671
2003-10-01	0.87443
2004-01-01	0.74969
2004-04-01	1.95717
2004-07-01	2.19927
2004-10-01	1.90843
2005-01-01	1.80676
2005-04-01	0.39941
2005-07-01	0.84274
2005-10-01	1.03161
2006-01-01	1.33554
2006-04-01	1.54444
2006-07-01	1.34963
2006-10-01	1.33540
2007-01-01	2.02994
2007-04-01	1.87191
2007-07-01	1.54485
2007-10-01	1.52720
2008-01-01	1.07442
2008-04-01	2.08466
2008-07-01	1.81876
2008-10-01	2.18701
2009-01-01	1.67301
2009-04-01	1.71278
2009-07-01	1.69401
2009-10-01	2.97163
2010-01-01	4.18821
2010-04-01	3.54960
2010-07-01	3.56608
2010-10-01	3.38740
2011-01-01	3.20974
2011-04-01	3.08067
2011-07-01	3.08479
2011-10-01	1.79875
2012-01-01	3.91388
2012-04-01	4.36804
2012-07-01	6.14461
2012-10-01	6.57252
2013-01-01	6.19920
2013-04-01	7.39604
2013-07-01	5.61302
2013-10-01	5.30909
2014-01-01	2.44864
2014-04-01	0.63727
2014-07-01	1.72774
2014-10-01	4.00971
2015-01-01	4.58179
2015-04-01	7.95350