Quarter	Billions of US Dollars
1993-07-01	0.09000
1993-10-01	0.09000
1994-01-01	0.09000
1994-04-01	0.09000
1997-07-01	0.00521
1997-10-01	0.05911
1998-01-01	0.05907
1998-04-01	0.03083
1998-07-01	0.01941
1998-10-01	0.00503
2005-04-01	0.26250
2005-07-01	0.28850
2005-10-01	0.34550
2006-01-01	0.39387
2006-04-01	0.39950
2006-07-01	0.54199
2006-10-01	0.60625
2007-01-01	0.79676
2007-04-01	0.79740
2007-07-01	0.87229
2007-10-01	0.89959
2008-01-01	0.75477
2008-04-01	1.81289
2008-07-01	1.42383
2008-10-01	1.40711
2009-01-01	1.39320
2009-04-01	1.66084
2009-07-01	1.69113
2009-10-01	1.67830
2010-01-01	2.13091
2010-04-01	2.41809
2010-07-01	2.40970
2010-10-01	2.44482
2011-01-01	2.75026
2011-04-01	2.76306
2011-07-01	2.50166
2011-10-01	2.43033
2012-01-01	2.23701
2012-04-01	2.37018
2012-07-01	2.42786
2012-10-01	2.47059
2013-01-01	2.48261
2013-04-01	2.42871
2013-07-01	2.46261
2013-10-01	2.48768
2014-01-01	2.29338
2014-04-01	2.09685
2014-07-01	1.92632
2014-10-01	1.99568
2015-01-01	1.34503
2015-04-01	1.84715