Quarter	Billions of US Dollars
1993-07-01	28.4895
1993-10-01	4.8532
1994-01-01	16.2234
1994-04-01	10.2062
1994-07-01	22.4962
1994-10-01	11.5315
1995-01-01	11.4127
1995-04-01	13.0334
1995-07-01	10.1322
1995-10-01	-1.8603
1996-01-01	5.7907
1996-04-01	8.2293
1996-07-01	3.0499
1996-10-01	3.6760
1997-01-01	2.0451
1997-04-01	6.6806
1997-07-01	4.8676
1997-10-01	-12.1465
1998-01-01	3.8145
1998-04-01	1.9217
1998-07-01	1.2178
1998-10-01	1.8704
1999-01-01	-5.1031
1999-04-01	2.8766
1999-07-01	-10.6926
1999-10-01	-3.6939
2000-01-01	3.4420
2000-04-01	1.7111
2000-07-01	-6.2837
2000-10-01	-5.1059
2001-01-01	11.2664
2001-04-01	4.8168
2001-07-01	-1.6146
2001-10-01	10.1618
2002-01-01	27.3030
2002-04-01	-7.1139
2002-07-01	1.7214
2002-10-01	2.1088
2003-01-01	31.5099
2003-04-01	26.9902
2003-07-01	5.4188
2003-10-01	-3.8339
2004-01-01	21.5142
2004-04-01	13.6455
2004-07-01	-4.0821
2004-10-01	-5.2133
2005-01-01	20.2755
2005-04-01	17.8583
2005-07-01	-6.1615
2005-10-01	10.0618
2006-01-01	22.8111
2006-04-01	20.3063
2006-07-01	-8.8651
2006-10-01	-0.8670
2007-01-01	23.9262
2007-04-01	42.7920
2007-07-01	-3.6364
2007-10-01	-42.4177
2008-01-01	28.9417
2008-04-01	21.7337
2008-07-01	-20.0698
2008-10-01	21.7797
2009-01-01	40.9826
2009-04-01	59.7747
2009-07-01	5.6772
2009-10-01	-5.9795
2010-01-01	40.2083
2010-04-01	18.1634
2010-07-01	23.2949
2010-10-01	7.8293
2011-01-01	17.4906
2011-04-01	8.8064
2011-07-01	-2.9270
2011-10-01	-5.8365
2012-01-01	-42.3552
2012-04-01	-6.3465
2012-07-01	-29.0241
2012-10-01	28.8101
2013-01-01	-5.9712
2013-04-01	-18.0667
2013-07-01	12.3965
2013-10-01	-23.7170
2014-01-01	-0.6492
2014-04-01	25.6553
2014-07-01	-0.5877
2014-10-01	3.5503
2015-01-01	-20.9615
2015-04-01	-12.3287