Quarter	Billions of US Dollars
1993-07-01	0.04160
1994-01-01	0.03133
1994-07-01	0.00481
1994-10-01	0.03109
1995-01-01	0.03210
1995-04-01	0.07350
1996-01-01	0.14326
1996-04-01	0.47660
1996-07-01	1.15498
1996-10-01	1.46733
1997-01-01	0.98938
1997-04-01	1.38083
1997-07-01	2.66861
1997-10-01	0.77843
1998-01-01	1.19714
1998-04-01	0.87944
1998-07-01	0.83543
1998-10-01	1.42178
1999-01-01	0.75410
1999-04-01	0.35282
1999-07-01	0.56800
1999-10-01	0.30163
2000-01-01	0.90873
2000-04-01	0.12081
2000-07-01	0.18744
2000-10-01	0.15014
2001-01-01	0.29269
2001-04-01	0.16575
2001-07-01	0.18816
2001-10-01	0.04279
2002-01-01	0.25561
2002-04-01	0.48992
2002-07-01	0.17241
2002-10-01	0.69379
2003-01-01	1.70283
2003-04-01	0.74710
2003-07-01	0.88594
2003-10-01	0.71541
2004-01-01	2.21891
2004-04-01	1.00023
2004-07-01	1.30480
2004-10-01	2.75721
2005-01-01	3.44281
2005-04-01	3.60110
2005-07-01	6.30897
2005-10-01	8.67683
2006-01-01	4.74371
2006-04-01	2.08213
2006-07-01	1.90513
2006-10-01	1.99284
2007-01-01	4.80821
2007-04-01	5.91893
2007-07-01	4.79922
2007-10-01	4.66941
2008-01-01	6.39091
2008-04-01	3.41948
2008-07-01	2.02964
2008-10-01	1.67303
2009-01-01	1.14814
2009-04-01	1.42107
2009-07-01	2.29788
2009-10-01	2.02463
2010-01-01	2.69484
2010-04-01	1.46249
2010-07-01	1.39165
2010-10-01	1.16568
2011-01-01	0.84321
2011-04-01	1.36407
2011-07-01	1.34370
2011-10-01	2.15851
2012-01-01	1.68848
2012-04-01	1.31825
2012-07-01	2.36178
2012-10-01	1.01891
2013-01-01	6.14087
2013-04-01	2.14279
2013-07-01	1.30125
2013-10-01	2.03118
2014-01-01	3.41388
2014-04-01	3.94588
2014-07-01	4.49220
2014-10-01	3.11775
2015-01-01	3.99173
2015-04-01	2.37021