Quarter	Billions of US Dollars
1993-10-01	0.09438
1994-01-01	0.09148
1994-04-01	0.04129
1994-07-01	0.01821
1997-04-01	0.05026
1997-07-01	0.05115
1997-10-01	0.04948
1998-01-01	0.04697
2003-07-01	0.00128
2003-10-01	0.00125
2004-04-01	0.05061
2004-07-01	0.17528
2004-10-01	0.17937
2005-04-01	0.10145
2005-07-01	0.12443
2005-10-01	0.18796
2006-01-01	0.39435
2006-04-01	3.26059
2006-07-01	2.50241
2006-10-01	0.98420
2007-01-01	1.96413
2007-04-01	2.47475
2007-07-01	2.36649
2007-10-01	2.46893
2008-01-01	1.56074
2008-04-01	1.92146
2008-07-01	2.06262
2008-10-01	1.61875
2009-01-01	1.03867
2009-04-01	0.61430
2009-07-01	0.43711
2009-10-01	0.37282
2010-01-01	0.39162
2010-04-01	0.37141
2010-07-01	0.38885
2010-10-01	0.28876
2011-01-01	0.29815
2011-04-01	0.26688
2011-07-01	0.26801
2011-10-01	0.26104
2012-01-01	0.28413
2012-04-01	0.20272
2012-07-01	0.14975
2012-10-01	0.14400
2013-01-01	0.13330
2013-04-01	0.12762
2013-07-01	0.14009
2013-10-01	0.13889
2014-01-01	0.17508
2014-04-01	0.05480
2014-07-01	0.02588
2014-10-01	0.05866
2015-01-01	0.15834
2015-04-01	0.08053