Quarter	Billions of US Dollars
1993-07-01	5.5121
1993-10-01	2.7127
1994-01-01	3.1403
1994-04-01	0.5637
1994-07-01	2.7242
1994-10-01	0.7102
1995-01-01	-0.0549
1995-04-01	-1.1048
1995-07-01	-0.4789
1995-10-01	-0.3211
1996-01-01	0.3026
1996-04-01	-1.7575
1996-07-01	-2.3933
1996-10-01	-2.8456
1997-01-01	-0.1691
1997-04-01	-1.6560
1997-07-01	-1.7085
1997-10-01	-2.8039
1998-01-01	-3.9348
1998-04-01	-0.3493
1998-07-01	-1.5917
1998-10-01	-2.2334
1999-01-01	-0.2220
1999-04-01	2.2264
1999-07-01	-1.0960
1999-10-01	-2.1482
2000-01-01	-0.6111
2000-04-01	-0.1613
2000-07-01	-1.3975
2000-10-01	-1.3429
2001-01-01	-1.8778
2001-04-01	0.7866
2001-07-01	-1.1980
2001-10-01	-0.3618
2002-01-01	1.5039
2002-04-01	1.0320
2002-07-01	0.8470
2002-10-01	0.5173
2003-01-01	-0.4109
2003-04-01	8.0106
2003-07-01	4.2023
2003-10-01	1.2860
2004-01-01	4.2354
2004-04-01	2.0520
2004-07-01	4.6745
2004-10-01	7.1011
2005-01-01	6.2821
2005-04-01	2.9691
2005-07-01	5.3762
2005-10-01	3.8153
2006-01-01	7.3695
2006-04-01	7.0812
2006-07-01	6.8011
2006-10-01	7.6649
2007-01-01	12.2008
2007-04-01	15.6778
2007-07-01	4.1045
2007-10-01	9.7180
2008-01-01	10.2904
2008-04-01	15.0658
2008-07-01	-2.0598
2008-10-01	-1.4806
2009-01-01	3.3905
2009-04-01	7.9162
2009-07-01	-2.2744
2009-10-01	9.7325
2010-01-01	0.6044
2010-04-01	11.1660
2010-07-01	0.8060
2010-10-01	8.5880
2011-01-01	-3.2570
2011-04-01	8.5041
2011-07-01	-10.2659
2011-10-01	-0.7302
2012-01-01	1.5035
2012-04-01	-17.2277
2012-07-01	1.0118
2012-10-01	-20.7213
2013-01-01	-0.1107
2013-04-01	-17.2973
2013-07-01	5.3617
2013-10-01	-1.3006
2014-01-01	-6.0104
2014-04-01	-5.6485
2014-07-01	-7.1558
2014-10-01	-6.6826
2015-01-01	-4.1406
2015-04-01	-7.0346