Quarter	Billions of US Dollars
1993-07-01	0.4499
1993-10-01	0.4588
1994-01-01	0.3682
1994-04-01	0.3453
1994-07-01	0.4005
1994-10-01	0.3960
1995-01-01	0.6024
1995-04-01	0.5311
1995-07-01	0.6057
1995-10-01	0.6364
1996-01-01	0.7533
1996-04-01	0.9391
1996-07-01	0.8346
1996-10-01	0.6395
1997-01-01	0.4341
1997-04-01	0.3442
1997-07-01	0.5555
1997-10-01	0.4643
1998-01-01	0.6203
1998-04-01	0.6945
1998-07-01	0.6017
1998-10-01	0.6492
1999-01-01	0.5301
1999-04-01	0.7931
1999-07-01	1.0190
1999-10-01	1.0843
2000-01-01	1.0850
2000-04-01	1.5622
2000-07-01	1.6076
2000-10-01	1.3206
2001-01-01	1.4445
2001-04-01	1.0314
2001-07-01	1.2373
2001-10-01	1.8384
2002-01-01	1.4461
2002-04-01	2.6314
2002-07-01	2.2413
2002-10-01	2.5752
2003-01-01	3.9669
2003-04-01	4.1965
2003-07-01	3.8027
2003-10-01	4.6730
2004-01-01	4.6327
2004-04-01	5.4721
2004-07-01	6.3968
2004-10-01	7.3425
2005-01-01	7.5804
2005-04-01	6.6595
2005-07-01	7.5331
2005-10-01	8.4902
2006-01-01	9.7902
2006-04-01	10.8714
2006-07-01	11.1027
2006-10-01	13.4004
2007-01-01	13.1343
2007-04-01	12.9889
2007-07-01	11.9153
2007-10-01	11.6197
2008-01-01	13.1727
2008-04-01	12.8569
2008-07-01	11.7117
2008-10-01	13.2340
2009-01-01	13.9790
2009-04-01	14.6027
2009-07-01	15.4289
2009-10-01	13.7241
2010-01-01	10.1564
2010-04-01	9.2001
2010-07-01	8.3337
2010-10-01	7.6601
2011-01-01	9.5831
2011-04-01	9.0019
2011-07-01	9.8579
2011-10-01	9.5244
2012-01-01	9.3009
2012-04-01	9.4612
2012-07-01	6.6589
2012-10-01	4.8638
2013-01-01	2.5047
2013-04-01	1.0892
2013-07-01	0.8280
2013-10-01	0.8450
2014-01-01	1.4829
2014-04-01	1.2352
2014-07-01	2.2525
2014-10-01	2.0483
2015-01-01	1.5143
2015-04-01	3.2312