Quarter	Billions of US Dollars
1994-01-01	0.00003
1994-10-01	0.03570
1995-01-01	0.07290
1995-10-01	0.20676
1996-01-01	0.12915
1996-04-01	0.18119
1996-07-01	0.18592
1996-10-01	0.18462
1997-01-01	0.73552
1997-04-01	0.09651
1997-07-01	0.16422
1997-10-01	0.01488
1998-01-01	0.24843
1998-04-01	0.35400
1998-07-01	0.17431
1998-10-01	0.00505
1999-01-01	0.23481
1999-04-01	0.16583
1999-07-01	0.10541
1999-10-01	0.03594
2000-01-01	0.27550
2000-04-01	0.44347
2000-07-01	0.41468
2000-10-01	0.26294
2001-01-01	0.23509
2001-04-01	0.07617
2001-07-01	0.12871
2001-10-01	0.12958
2002-01-01	0.74595
2002-04-01	0.62281
2002-07-01	0.15869
2002-10-01	0.98897
2003-01-01	0.70866
2003-04-01	0.34609
2003-07-01	0.43647
2003-10-01	0.31267
2004-01-01	0.27247
2004-04-01	0.31268
2004-07-01	0.24007
2004-10-01	0.70245
2005-01-01	0.73666
2005-04-01	1.17513
2005-07-01	0.64474
2005-10-01	0.59344
2006-01-01	0.44975
2006-04-01	0.47125
2006-07-01	0.18057
2006-10-01	0.32384
2007-01-01	1.04859
2007-04-01	1.56077
2007-07-01	1.94775
2007-10-01	3.24519
2008-01-01	1.47549
2008-04-01	0.59231
2008-07-01	0.42049
2008-10-01	0.10790
2009-01-01	0.04319
2009-04-01	0.18219
2009-07-01	0.14484
2009-10-01	0.35876
2010-01-01	0.18459
2010-04-01	0.28226
2010-07-01	0.54997
2010-10-01	0.30582
2011-01-01	0.27590
2011-04-01	1.23850
2011-07-01	0.32604
2011-10-01	0.22815
2012-01-01	0.20286
2012-04-01	0.36722
2012-07-01	0.12060
2012-10-01	0.16507
2013-01-01	0.32261
2013-04-01	0.11261
2013-07-01	0.89589
2013-10-01	0.18108
2014-01-01	0.11265
2014-04-01	0.20955
2014-07-01	0.37980
2014-10-01	0.06910
2015-01-01	0.04934
2015-04-01	0.97201