Quarter	Billions of US Dollars
1993-07-01	0.0463
1993-10-01	0.0434
1994-01-01	0.0449
1994-04-01	0.0470
1994-07-01	0.0484
1994-10-01	0.0484
1995-01-01	0.0542
1995-04-01	0.0361
1995-07-01	0.0352
1995-10-01	0.0349
1996-01-01	0.0339
1996-04-01	0.0300
1996-07-01	0.0758
1996-10-01	0.0750
1997-01-01	0.0826
1997-04-01	0.2080
1997-07-01	0.3539
1997-10-01	0.3505
1998-01-01	0.5006
1998-04-01	0.6692
1998-07-01	0.6762
1998-10-01	0.6796
1999-01-01	0.6542
1999-04-01	0.5513
1999-07-01	0.5863
1999-10-01	0.9783
2000-01-01	0.9587
2000-04-01	0.8984
2000-07-01	0.7381
2000-10-01	0.7451
2001-01-01	0.8274
2001-04-01	0.8563
2001-07-01	0.8553
2001-10-01	1.0898
2002-01-01	1.6097
2002-04-01	2.1292
2002-07-01	2.1211
2002-10-01	4.4235
2003-01-01	6.6134
2003-04-01	6.8153
2003-07-01	6.9622
2003-10-01	7.1342
2004-01-01	7.7301
2004-04-01	8.5052
2004-07-01	9.5597
2004-10-01	10.0285
2005-01-01	10.0419
2005-04-01	9.9429
2005-07-01	9.6841
2005-10-01	11.2688
2006-01-01	11.3992
2006-04-01	11.1072
2006-07-01	11.6763
2006-10-01	14.2311
2007-01-01	15.7227
2007-04-01	18.7038
2007-07-01	19.5965
2007-10-01	19.6284
2008-01-01	20.6138
2008-04-01	21.9384
2008-07-01	25.6293
2008-10-01	25.4611
2009-01-01	24.1809
2009-04-01	28.0051
2009-07-01	28.4796
2009-10-01	30.0364
2010-01-01	29.8105
2010-04-01	33.6786
2010-07-01	34.6557
2010-10-01	36.2107
2011-01-01	40.0167
2011-04-01	42.2205
2011-07-01	40.2180
2011-10-01	40.7191
2012-01-01	41.5023
2012-04-01	42.4748
2012-07-01	47.2582
2012-10-01	53.3899
2013-01-01	55.4292
2013-04-01	67.2764
2013-07-01	67.1065
2013-10-01	69.9287
2014-01-01	69.4027
2014-04-01	68.5277
2014-07-01	64.5146
2014-10-01	66.0248
2015-01-01	63.9487
2015-04-01	64.4057