Quarter	Billions of US Dollars
1993-07-01	7.7131
1993-10-01	4.6721
1994-01-01	5.0126
1994-04-01	4.0194
1994-07-01	3.7895
1994-10-01	1.6318
1995-01-01	0.5380
1995-04-01	0.4399
1995-07-01	0.8197
1995-10-01	1.3203
1996-01-01	3.2691
1996-04-01	3.0412
1996-07-01	2.2900
1996-10-01	0.4891
1997-01-01	1.2730
1997-04-01	1.1279
1997-07-01	0.9432
1997-10-01	0.6437
1998-01-01	1.5444
1998-04-01	1.7449
1998-07-01	0.5512
1998-10-01	1.2122
1999-01-01	0.8942
1999-04-01	3.0786
1999-07-01	0.6458
1999-10-01	1.1754
2000-01-01	1.3768
2000-04-01	0.0754
2000-07-01	0.0043
2000-10-01	0.1866
2001-01-01	1.1174
2001-04-01	2.2982
2001-07-01	1.3306
2001-10-01	2.7446
2002-01-01	3.5225
2002-04-01	4.0212
2002-07-01	2.7283
2002-10-01	3.2014
2003-01-01	4.3660
2003-04-01	10.3949
2003-07-01	5.7815
2003-10-01	7.3080
2004-01-01	8.4913
2004-04-01	6.5481
2004-07-01	8.6676
2004-10-01	9.5048
2005-01-01	11.1666
2005-04-01	4.8040
2005-07-01	9.8085
2005-10-01	8.1430
2006-01-01	13.0826
2006-04-01	11.6156
2006-07-01	7.8741
2006-10-01	13.9649
2007-01-01	22.1956
2007-04-01	20.3692
2007-07-01	14.9665
2007-10-01	12.1189
2008-01-01	16.7616
2008-04-01	23.0903
2008-07-01	2.3257
2008-10-01	9.0189
2009-01-01	12.1039
2009-04-01	13.3006
2009-07-01	12.2263
2009-10-01	12.5668
2010-01-01	11.5154
2010-04-01	14.8787
2010-07-01	14.7272
2010-10-01	13.8557
2011-01-01	13.6622
2011-04-01	16.9439
2011-07-01	6.4677
2011-10-01	10.5934
2012-01-01	10.6218
2012-04-01	3.6517
2012-07-01	3.8719
2012-10-01	3.3483
2013-01-01	4.6831
2013-04-01	7.0741
2013-07-01	9.3249
2013-10-01	9.8001
2014-01-01	2.7438
2014-04-01	5.4678
2014-07-01	2.3021
2014-10-01	3.6679
2015-01-01	3.3893
2015-04-01	4.6862