Quarter	Billions of US Dollars
1993-07-01	0.4775
1993-10-01	0.4533
1994-01-01	0.6707
1994-04-01	0.7460
1994-07-01	0.7912
1994-10-01	0.7675
1995-01-01	0.7704
1995-04-01	0.6789
1995-07-01	0.9239
1995-10-01	1.4098
1996-01-01	1.8649
1996-04-01	1.9054
1996-07-01	1.5547
1996-10-01	1.6613
1997-01-01	1.6106
1997-04-01	2.0700
1997-07-01	2.2875
1997-10-01	2.8570
1998-01-01	2.7859
1998-04-01	3.3692
1998-07-01	3.3437
1998-10-01	3.3693
1999-01-01	3.6279
1999-04-01	2.8790
1999-07-01	2.3739
1999-10-01	1.3345
2000-01-01	2.3455
2000-04-01	2.5775
2000-07-01	3.3809
2000-10-01	4.9083
2001-01-01	5.6399
2001-04-01	6.0898
2001-07-01	6.2245
2001-10-01	4.4170
2002-01-01	3.0366
2002-04-01	3.5830
2002-07-01	6.3677
2002-10-01	6.8334
2003-01-01	9.0422
2003-04-01	9.2559
2003-07-01	5.5390
2003-10-01	4.9928
2004-01-01	2.4794
2004-04-01	1.7308
2004-07-01	1.6135
2004-10-01	1.5439
2005-01-01	3.6569
2005-04-01	3.5612
2005-07-01	3.5903
2005-10-01	3.6767
2006-01-01	2.7719
2006-04-01	3.4077
2006-07-01	5.1953
2006-10-01	5.1914
2007-01-01	4.3353
2007-04-01	3.6057
2007-07-01	2.1889
2007-10-01	3.1169
2008-01-01	4.0992
2008-04-01	5.4692
2008-07-01	5.0212
2008-10-01	5.5192
2009-01-01	4.7317
2009-04-01	4.2491
2009-07-01	4.8987
2009-10-01	5.8734
2010-01-01	7.6797
2010-04-01	8.0020
2010-07-01	9.4271
2010-10-01	9.4176
2011-01-01	9.1775
2011-04-01	10.3820
2011-07-01	9.5466
2011-10-01	7.4342
2012-01-01	10.7695
2012-04-01	11.9080
2012-07-01	12.6540
2012-10-01	13.0562
2013-01-01	11.7485
2013-04-01	13.5937
2013-07-01	12.9072
2013-10-01	12.9067
2014-01-01	14.1045
2014-04-01	14.6015
2014-07-01	16.1318
2014-10-01	16.3854
2015-01-01	16.9657
2015-04-01	12.7072