Quarter	Billions of US Dollars
1993-07-01	0.5598
1993-10-01	0.9268
1994-01-01	2.0015
1994-04-01	1.8773
1994-07-01	2.1357
1994-10-01	0.4853
1995-01-01	-0.2661
1995-04-01	0.2076
1995-07-01	0.7418
1995-10-01	0.2954
1996-01-01	0.0257
1996-04-01	0.4486
1996-07-01	-1.0867
1996-10-01	0.4025
1997-01-01	0.4572
1997-04-01	1.3218
1997-07-01	2.6334
1997-10-01	0.1280
1998-01-01	0.0066
1998-04-01	0.3886
1998-07-01	0.5978
1998-10-01	-1.1660
1999-01-01	-1.7497
1999-04-01	0.4063
1999-07-01	1.7566
1999-10-01	2.8998
2000-01-01	0.6992
2000-04-01	15.5510
2000-07-01	7.2430
2000-10-01	7.4303
2001-01-01	4.7212
2001-04-01	1.7022
2001-07-01	5.3461
2001-10-01	-3.1631
2002-01-01	0.2925
2002-04-01	-1.7701
2002-07-01	-3.2742
2002-10-01	-4.6018
2003-01-01	-0.6609
2003-04-01	-3.1446
2003-07-01	-6.8791
2003-10-01	-2.3111
2004-01-01	3.9161
2004-04-01	4.8809
2004-07-01	5.1850
2004-10-01	4.4800
2005-01-01	0.3132
2005-04-01	4.3909
2005-07-01	-2.8307
2005-10-01	10.2932
2006-01-01	3.9926
2006-04-01	14.1096
2006-07-01	12.7099
2006-10-01	16.6613
2007-01-01	2.7063
2007-04-01	17.7263
2007-07-01	-2.6261
2007-10-01	-5.4725
2008-01-01	0.3294
2008-04-01	0.1001
2008-07-01	-2.8046
2008-10-01	2.2488
2009-01-01	-1.1657
2009-04-01	-6.6024
2009-07-01	-3.3082
2009-10-01	-4.9293
2010-01-01	-2.3489
2010-04-01	-6.0826
2010-07-01	-0.6174
2010-10-01	-2.9584
2011-01-01	1.6628
2011-04-01	-3.8923
2011-07-01	0.0316
2011-10-01	-4.2417
2012-01-01	-1.8991
2012-04-01	-6.4455
2012-07-01	-0.4689
2012-10-01	-0.8240
2013-01-01	3.0584
2013-04-01	1.2103
2013-07-01	5.0575
2013-10-01	6.4135
2014-01-01	0.1003
2014-04-01	-2.9863
2014-07-01	4.7089
2014-10-01	10.5153
2015-01-01	0.6072
2015-04-01	8.5369