Quarter	Billions of US Dollars
1993-07-01	1.37746
1993-10-01	1.09385
1994-01-01	2.19274
1994-04-01	0.78926
1994-07-01	0.67699
1994-10-01	1.00865
1995-01-01	1.45989
1995-04-01	0.85792
1995-07-01	1.57466
1995-10-01	0.36260
1996-01-01	0.17553
1996-04-01	7.64266
1996-07-01	0.38614
1996-10-01	0.38970
1997-01-01	0.04537
1997-10-01	0.49907
1998-01-01	0.10742
1998-07-01	0.65536
1998-10-01	0.00297
1999-01-01	0.10666
1999-04-01	0.15886
1999-07-01	0.05476
1999-10-01	0.70502
2000-01-01	0.10230
2000-04-01	0.21282
2000-07-01	0.35713
2000-10-01	0.21459
2001-01-01	0.46777
2001-04-01	0.14117
2001-07-01	0.10591
2001-10-01	0.15927
2002-01-01	0.23479
2002-04-01	0.10249
2002-07-01	0.19203
2002-10-01	0.12905
2003-01-01	0.31657
2003-04-01	0.47083
2003-07-01	0.02664
2003-10-01	0.18001
2004-01-01	0.75227
2004-04-01	0.17909
2004-10-01	0.10919
2005-01-01	0.75479
2005-04-01	0.23423
2005-07-01	0.42254
2005-10-01	0.43787
2006-01-01	0.50871
2006-04-01	0.97466
2006-07-01	0.62063
2006-10-01	1.70252
2007-01-01	2.38236
2007-04-01	0.61459
2007-07-01	0.30019
2007-10-01	0.52718
2008-01-01	2.23515
2008-04-01	2.16664
2008-07-01	0.01315
2008-10-01	0.22258
2009-01-01	0.32289
2009-04-01	0.00213
2009-07-01	0.28713
2009-10-01	0.14675
2010-01-01	0.08339
2010-04-01	2.42638
2010-10-01	0.20449
2011-01-01	0.12400
2011-04-01	0.20869
2011-07-01	1.40000
2011-10-01	0.28715
2012-04-01	1.44215
2012-07-01	0.37526
2012-10-01	0.81079
2013-01-01	1.00000
2013-04-01	1.00000
2014-10-01	0.16293
2015-04-01	0.11048