Quarter	Billions of US Dollars
1993-07-01	0.12200
1993-10-01	0.32726
1994-01-01	0.30706
1994-04-01	0.31682
1994-07-01	0.51521
1994-10-01	0.33267
1995-01-01	0.37033
1995-04-01	0.53498
1995-07-01	0.20673
1995-10-01	0.24881
1996-01-01	0.32408
1996-04-01	0.16983
1996-07-01	0.26923
1996-10-01	0.17427
1997-01-01	0.10000
1997-04-01	0.10000
1998-10-01	0.17301
1999-01-01	0.16611
1999-04-01	0.34015
1999-07-01	0.36218
1999-10-01	0.17500
2000-01-01	0.36395
2000-04-01	0.18975
2000-07-01	0.33544
2000-10-01	0.32406
2001-01-01	0.15000
2001-04-01	0.15000
2001-07-01	0.35000
2001-10-01	0.50000
2002-01-01	0.72000
2002-04-01	0.72000
2002-07-01	0.37000
2002-10-01	0.22000
2003-04-01	0.35000
2003-07-01	0.54000
2003-10-01	0.54000
2004-01-01	0.54000
2004-04-01	0.19000
2005-04-01	0.02500
2005-07-01	0.12500
2005-10-01	0.12500
2006-01-01	0.22500
2006-04-01	0.20000
2006-07-01	0.26541
2006-10-01	0.26544
2007-01-01	0.18534
2007-04-01	0.19838
2007-07-01	0.03350
2007-10-01	0.33387
2008-01-01	0.61449
2008-04-01	0.60000
2008-07-01	0.95000
2008-10-01	0.90000
2009-01-01	1.23252
2009-04-01	1.23549
2009-07-01	1.54124
2009-10-01	1.28527
2010-01-01	0.88144
2010-04-01	0.88230
2010-07-01	0.30234
2010-10-01	1.23878
2011-01-01	2.34629
2011-04-01	2.74360
2011-07-01	2.75119
2011-10-01	3.79416
2012-01-01	2.54754
2012-04-01	2.15676
2012-07-01	2.16308
2012-10-01	0.16349
2013-07-01	0.60000
2013-10-01	0.60000
2014-01-01	1.65000
2014-04-01	1.95026
2014-07-01	1.34329
2014-10-01	1.33798
2015-01-01	1.42839
2015-04-01	1.84729