Quarter	Billions of US Dollars
1993-07-01	12.4611
1993-10-01	9.9844
1994-01-01	5.2493
1994-04-01	1.7030
1994-07-01	3.3211
1994-10-01	5.3010
1995-01-01	-1.1834
1995-04-01	5.6792
1995-07-01	3.5529
1995-10-01	5.5526
1996-01-01	1.5228
1996-04-01	3.2354
1996-07-01	5.6529
1996-10-01	15.0578
1997-01-01	5.3627
1997-04-01	8.7947
1997-07-01	14.1601
1997-10-01	1.3989
1998-01-01	10.7763
1998-04-01	17.4243
1998-07-01	4.7379
1998-10-01	12.2478
1999-01-01	21.4859
1999-04-01	31.0236
1999-07-01	26.7784
1999-10-01	15.4218
2000-01-01	15.4141
2000-04-01	16.2898
2000-07-01	24.4081
2000-10-01	16.9455
2001-01-01	51.5763
2001-04-01	50.3681
2001-07-01	13.9042
2001-10-01	45.9929
2002-01-01	2.0811
2002-04-01	32.2422
2002-07-01	-2.5436
2002-10-01	7.3521
2003-01-01	9.9241
2003-04-01	25.8754
2003-07-01	22.0242
2003-10-01	22.8303
2004-01-01	0.0976
2004-04-01	-2.9510
2004-07-01	-3.7369
2004-10-01	22.6726
2005-01-01	10.9091
2005-04-01	3.2201
2005-07-01	-10.1105
2005-10-01	21.1019
2006-01-01	11.9028
2006-04-01	3.0148
2006-07-01	17.1444
2006-10-01	24.3270
2007-01-01	13.0848
2007-04-01	49.9171
2007-07-01	3.2510
2007-10-01	41.3698
2008-01-01	-7.3607
2008-04-01	46.4900
2008-07-01	21.1215
2008-10-01	2.3868
2009-01-01	61.7760
2009-04-01	94.3396
2009-07-01	51.4794
2009-10-01	55.5318
2010-01-01	45.8810
2010-04-01	26.0312
2010-07-01	38.7232
2010-10-01	48.3705
2011-01-01	39.2035
2011-04-01	59.2210
2011-07-01	30.9243
2011-10-01	48.7378
2012-01-01	77.5741
2012-04-01	53.5553
2012-07-01	88.3664
2012-10-01	99.3248
2013-01-01	60.4381
2013-04-01	62.1465
2013-07-01	65.9577
2013-10-01	96.1555
2014-01-01	19.4071
2014-04-01	73.2899
2014-07-01	61.8595
2014-10-01	58.6974
2015-01-01	60.9968
2015-04-01	54.0342