Quarter	Billions of US Dollars
1993-07-01	5.9910
1993-10-01	5.4246
1994-01-01	4.8382
1994-04-01	3.9925
1994-07-01	4.8453
1994-10-01	3.1106
1995-01-01	3.5357
1995-04-01	5.3109
1995-07-01	4.7039
1995-10-01	4.8953
1996-01-01	5.3352
1996-04-01	4.3228
1996-07-01	5.6172
1996-10-01	4.1229
1997-01-01	4.9117
1997-04-01	5.3692
1997-07-01	5.5318
1997-10-01	4.9436
1998-01-01	5.9095
1998-04-01	2.7996
1998-07-01	4.0759
1998-10-01	5.2121
1999-01-01	5.2041
1999-04-01	3.7462
1999-07-01	3.9659
1999-10-01	4.5285
2000-01-01	6.7929
2000-04-01	5.2806
2000-07-01	4.9607
2000-10-01	4.9858
2001-01-01	7.0039
2001-04-01	4.5778
2001-07-01	4.7511
2001-10-01	4.4240
2002-01-01	4.3407
2002-04-01	4.5458
2002-07-01	5.6189
2002-10-01	5.1161
2003-01-01	5.5778
2003-04-01	5.0301
2003-07-01	3.5516
2003-10-01	4.3840
2004-01-01	7.3497
2004-04-01	5.1640
2004-07-01	7.5693
2004-10-01	6.2407
2005-01-01	7.1522
2005-04-01	5.3272
2005-07-01	6.1559
2005-10-01	7.7486
2006-01-01	9.3751
2006-04-01	8.5359
2006-07-01	7.2560
2006-10-01	7.0866
2007-01-01	6.6480
2007-04-01	5.7465
2007-07-01	7.3787
2007-10-01	7.9441
2008-01-01	9.7561
2008-04-01	11.1025
2008-07-01	9.7133
2008-10-01	6.3274
2009-01-01	6.2898
2009-04-01	8.4529
2009-07-01	9.1593
2009-10-01	8.2042
2010-01-01	7.9863
2010-04-01	9.2219
2010-07-01	8.9542
2010-10-01	7.2096
2011-01-01	9.4092
2011-04-01	10.4977
2011-07-01	11.1072
2011-10-01	10.7207
2012-01-01	9.8801
2012-04-01	8.6514
2012-07-01	10.0154
2012-10-01	9.7032
2013-01-01	8.3564
2013-04-01	9.5139
2013-07-01	7.8874
2013-10-01	5.9854
2014-01-01	9.0101
2014-04-01	9.1364
2014-07-01	12.5269
2014-10-01	9.2466
2015-01-01	8.1100
2015-04-01	9.0565