Quarter	Billions of US Dollars
1993-07-01	0.5240
1993-10-01	0.5287
1994-01-01	0.5059
1994-04-01	0.4341
1995-01-01	0.1240
1995-04-01	0.1293
1995-07-01	0.1165
1995-10-01	0.2134
1996-01-01	0.1500
1996-04-01	0.1500
1996-07-01	0.1500
1996-10-01	0.0500
1997-01-01	0.0750
1997-04-01	0.0131
1997-07-01	0.0849
1997-10-01	0.1400
1998-01-01	0.2137
1998-04-01	0.2816
1998-07-01	0.3542
1998-10-01	0.3901
1999-01-01	0.4029
1999-04-01	0.3268
1999-07-01	0.5918
1999-10-01	0.7844
2000-01-01	0.5695
2000-04-01	0.8504
2000-07-01	0.7332
2000-10-01	0.7641
2001-01-01	0.8320
2001-04-01	1.7483
2001-07-01	1.7402
2001-10-01	1.5920
2002-01-01	1.6788
2002-04-01	1.3256
2002-07-01	1.5320
2002-10-01	1.4393
2003-01-01	2.1949
2003-04-01	2.1154
2003-07-01	2.4811
2003-10-01	2.5310
2004-01-01	1.6579
2004-04-01	1.4710
2004-07-01	1.9247
2004-10-01	3.0921
2005-01-01	5.5353
2005-04-01	4.3626
2005-07-01	4.5807
2005-10-01	4.5423
2006-01-01	4.3717
2006-04-01	5.2570
2006-07-01	6.0028
2006-10-01	5.8716
2007-01-01	6.4348
2007-04-01	7.2724
2007-07-01	6.6546
2007-10-01	5.6718
2008-01-01	7.2591
2008-04-01	9.1350
2008-07-01	10.2732
2008-10-01	9.4676
2009-01-01	8.0136
2009-04-01	6.4275
2009-07-01	5.8234
2009-10-01	5.7530
2010-01-01	5.7168
2010-04-01	5.6044
2010-07-01	8.6846
2010-10-01	8.9954
2011-01-01	10.2026
2011-04-01	12.9633
2011-07-01	13.6995
2011-10-01	13.9857
2012-01-01	15.1448
2012-04-01	13.0270
2012-07-01	13.2519
2012-10-01	14.6428
2013-01-01	17.0563
2013-04-01	24.1438
2013-07-01	33.6659
2013-10-01	37.7000
2014-01-01	38.8312
2014-04-01	39.4452
2014-07-01	41.3082
2014-10-01	35.8527
2015-01-01	29.8855
2015-04-01	30.3632