Quarter	Billions of US Dollars
1993-07-01	0.5848
1993-10-01	0.5497
1994-01-01	0.5930
1994-04-01	0.6180
1994-07-01	0.6307
1994-10-01	0.5157
1995-01-01	0.5199
1995-04-01	0.4419
1995-07-01	0.4082
1995-10-01	0.3981
1996-01-01	0.3871
1996-04-01	0.4867
1996-07-01	0.3090
1996-10-01	0.4872
1997-01-01	0.4692
1997-04-01	0.4747
1997-07-01	0.9652
1997-10-01	0.9545
1998-01-01	0.9493
1998-04-01	0.9445
1998-07-01	0.9572
1998-10-01	0.9762
1999-01-01	0.9617
1999-04-01	1.0069
1999-07-01	1.0404
1999-10-01	2.0514
2000-01-01	1.9970
2000-04-01	2.0606
2000-07-01	1.9731
2000-10-01	2.0221
2001-01-01	2.8447
2001-04-01	2.7669
2001-07-01	3.0197
2001-10-01	3.2882
2002-01-01	3.5162
2002-04-01	3.7965
2002-07-01	3.4519
2002-10-01	3.9861
2003-01-01	3.7225
2003-04-01	4.3702
2003-07-01	4.2124
2003-10-01	4.4700
2004-01-01	4.2714
2004-04-01	5.3386
2004-07-01	5.2686
2004-10-01	5.7371
2005-01-01	6.5970
2005-04-01	6.1110
2005-07-01	5.7696
2005-10-01	6.0043
2006-01-01	5.5536
2006-04-01	6.1909
2006-07-01	5.9630
2006-10-01	8.6607
2007-01-01	8.0361
2007-04-01	8.9153
2007-07-01	8.8107
2007-10-01	9.5448
2008-01-01	10.6551
2008-04-01	10.1312
2008-07-01	9.5519
2008-10-01	10.1782
2009-01-01	9.8839
2009-04-01	10.6655
2009-07-01	11.0485
2009-10-01	11.1152
2010-01-01	10.4120
2010-04-01	9.2165
2010-07-01	10.7573
2010-10-01	10.6170
2011-01-01	9.6665
2011-04-01	8.2815
2011-07-01	7.3950
2011-10-01	7.4141
2012-01-01	7.4595
2012-04-01	7.0980
2012-07-01	7.3159
2012-10-01	8.7856
2013-01-01	9.0411
2013-04-01	9.8147
2013-07-01	10.1165
2013-10-01	9.8644
2014-01-01	9.9280
2014-04-01	10.5023
2014-07-01	10.3100
2014-10-01	9.6978
2015-01-01	7.8071
2015-04-01	8.4291