Quarter	Billions of US Dollars
1993-07-01	0.1967
1993-10-01	0.2501
1994-01-01	0.2568
1994-04-01	0.2660
1994-07-01	0.3542
1994-10-01	0.1698
1995-01-01	0.1423
1995-04-01	0.1541
1995-07-01	0.1587
1995-10-01	0.1685
1996-01-01	0.1668
1996-04-01	0.3305
1996-07-01	0.3304
1996-10-01	0.4007
1997-01-01	0.3575
1997-04-01	0.3575
1997-07-01	0.3764
1997-10-01	0.3389
1998-01-01	0.3289
1998-04-01	0.4880
1998-07-01	0.5489
1998-10-01	0.4460
1999-01-01	0.3353
1999-04-01	0.3161
1999-07-01	0.3161
1999-10-01	0.2636
2000-01-01	0.2588
2000-04-01	0.1967
2000-07-01	0.2097
2000-10-01	0.1416
2001-01-01	0.1538
2001-04-01	0.1498
2001-07-01	0.1468
2001-10-01	0.1185
2002-01-01	0.3078
2002-04-01	0.3148
2002-07-01	0.3266
2002-10-01	0.3371
2003-01-01	0.3400
2003-04-01	0.2698
2003-07-01	0.2707
2003-10-01	0.2787
2004-01-01	0.2858
2004-04-01	0.3384
2004-07-01	0.3474
2004-10-01	0.6756
2005-01-01	0.5448
2005-04-01	0.7350
2005-07-01	0.6588
2005-10-01	0.6918
2006-01-01	0.9525
2006-04-01	0.9595
2006-07-01	0.9633
2006-10-01	1.3774
2007-01-01	1.6881
2007-04-01	1.8863
2007-07-01	1.9621
2007-10-01	2.3683
2008-01-01	2.3854
2008-04-01	2.4302
2008-07-01	2.6042
2008-10-01	2.5154
2009-01-01	2.6634
2009-04-01	3.0538
2009-07-01	3.5480
2009-10-01	3.6640
2010-01-01	4.5204
2010-04-01	4.6353
2010-07-01	4.9440
2010-10-01	5.5318
2011-01-01	6.0026
2011-04-01	6.0771
2011-07-01	6.5044
2011-10-01	6.7733
2012-01-01	7.0011
2012-04-01	6.8991
2012-07-01	7.1901
2012-10-01	7.6945
2013-01-01	7.7172
2013-04-01	8.1556
2013-07-01	8.0047
2013-10-01	9.4483
2014-01-01	10.5570
2014-04-01	11.9586
2014-07-01	12.6553
2014-10-01	13.2008
2015-01-01	13.4712
2015-04-01	14.7739