Quarter	Billions of US Dollars
1993-07-01	0.60368
1993-10-01	0.22137
1994-01-01	0.78242
1994-04-01	0.28408
1994-07-01	0.38558
1994-10-01	0.22516
1995-01-01	0.15573
1995-04-01	0.15382
1995-07-01	0.25047
1995-10-01	0.22933
1996-01-01	0.21674
1996-04-01	0.77296
1996-07-01	0.30231
1996-10-01	0.32343
1997-01-01	0.23538
1997-04-01	0.24305
1997-07-01	0.37398
1997-10-01	0.32660
1998-01-01	0.31013
1998-04-01	0.28817
1998-07-01	0.32649
1998-10-01	0.43943
1999-01-01	0.43567
1999-04-01	0.35529
1999-07-01	0.44605
1999-10-01	0.60688
2000-01-01	0.46888
2000-04-01	0.65756
2000-07-01	0.39366
2000-10-01	0.38791
2001-01-01	0.76500
2001-04-01	0.47640
2001-07-01	0.58384
2001-10-01	0.38761
2002-01-01	0.50690
2002-04-01	0.42838
2002-07-01	0.92310
2002-10-01	0.44261
2003-01-01	0.95896
2003-04-01	0.60047
2003-07-01	1.03459
2003-10-01	0.94281
2004-01-01	1.12514
2004-04-01	1.06597
2004-07-01	2.12480
2004-10-01	1.10851
2005-01-01	1.84191
2005-04-01	1.84587
2005-07-01	2.26641
2005-10-01	1.86561
2006-01-01	3.40800
2006-04-01	2.46450
2006-07-01	1.35297
2006-10-01	2.74933
2007-01-01	2.05409
2007-04-01	1.35006
2007-07-01	1.81295
2007-10-01	2.50657
2008-01-01	2.60461
2008-04-01	1.86111
2008-07-01	1.28526
2008-10-01	0.52015
2009-01-01	0.58553
2009-04-01	0.72171
2009-07-01	0.71508
2009-10-01	0.61119
2010-01-01	1.26562
2010-04-01	0.60201
2010-07-01	1.06543
2010-10-01	1.50394
2011-01-01	2.12561
2011-04-01	1.09951
2011-07-01	0.95899
2011-10-01	0.81844
2012-01-01	1.26498
2012-04-01	1.26826
2012-07-01	1.02202
2012-10-01	0.89047
2013-01-01	0.52602
2013-04-01	0.83321
2013-07-01	0.48262
2013-10-01	0.42294
2014-01-01	3.50454
2014-04-01	4.23161
2014-07-01	5.53358
2014-10-01	5.33275
2015-01-01	1.32093
2015-04-01	2.00929