Quarter	Billions of US Dollars
1993-07-01	4.1013
1993-10-01	4.3208
1994-01-01	5.6630
1994-04-01	5.7376
1994-07-01	5.6207
1994-10-01	4.6658
1995-01-01	3.0222
1995-04-01	3.7488
1995-07-01	5.9274
1995-10-01	7.0643
1996-01-01	7.8599
1996-04-01	7.3668
1996-07-01	5.5241
1996-10-01	6.2342
1997-01-01	6.5239
1997-04-01	7.4104
1997-07-01	8.6187
1997-10-01	8.0416
1998-01-01	8.5760
1998-04-01	7.6906
1998-07-01	5.6809
1998-10-01	6.0689
1999-01-01	4.2843
1999-04-01	4.0527
1999-07-01	4.4138
1999-10-01	4.5759
2000-01-01	5.0514
2000-04-01	6.2144
2000-07-01	5.9957
2000-10-01	5.0168
2001-01-01	6.1802
2001-04-01	6.7158
2001-07-01	7.6699
2001-10-01	7.3850
2002-01-01	6.8247
2002-04-01	6.8120
2002-07-01	7.4517
2002-10-01	7.8012
2003-01-01	8.4988
2003-04-01	10.4012
2003-07-01	10.0346
2003-10-01	11.9040
2004-01-01	10.9822
2004-04-01	9.1438
2004-07-01	7.9687
2004-10-01	5.4578
2005-01-01	4.7629
2005-04-01	2.9838
2005-07-01	3.7133
2005-10-01	4.1381
2006-01-01	4.1397
2006-04-01	5.0255
2006-07-01	5.6756
2006-10-01	5.6086
2007-01-01	6.2761
2007-04-01	6.6999
2007-07-01	6.7140
2007-10-01	9.0325
2008-01-01	10.0615
2008-04-01	7.8758
2008-07-01	6.9754
2008-10-01	4.5538
2009-01-01	3.2788
2009-04-01	2.4532
2009-07-01	2.6315
2009-10-01	3.9985
2010-01-01	6.4648
2010-04-01	6.6682
2010-07-01	9.6341
2010-10-01	6.9009
2011-01-01	6.8401
2011-04-01	8.0408
2011-07-01	4.7206
2011-10-01	5.7409
2012-01-01	4.5541
2012-04-01	4.1837
2012-07-01	7.9139
2012-10-01	7.8967
2013-01-01	9.6225
2013-04-01	11.6404
2013-07-01	9.3341
2013-10-01	12.3658
2014-01-01	16.5401
2014-04-01	15.2769
2014-07-01	14.8372
2014-10-01	12.5248
2015-01-01	7.9152
2015-04-01	7.6498