Quarter	Billions of US Dollars
1993-07-01	0.14702
1993-10-01	0.16421
1994-01-01	0.20038
1994-04-01	0.08000
1994-07-01	0.06900
1994-10-01	0.07094
1995-01-01	0.07710
1995-04-01	0.09016
1995-07-01	0.27693
1995-10-01	0.35700
1996-01-01	0.74941
1996-04-01	0.78785
1996-07-01	0.82168
1996-10-01	0.70120
1997-01-01	0.61817
1997-04-01	0.64476
1997-07-01	0.63590
1997-10-01	0.76814
1998-01-01	0.47414
1998-04-01	0.55136
1998-07-01	0.57816
1998-10-01	0.49328
1999-01-01	0.53993
1999-04-01	0.48256
1999-07-01	0.35261
1999-10-01	0.46677
2000-01-01	0.87308
2000-04-01	0.82329
2000-07-01	1.87514
2000-10-01	1.88898
2001-01-01	1.36926
2001-04-01	1.67632
2001-07-01	0.91630
2001-10-01	0.68184
2002-01-01	0.68097
2002-04-01	0.56263
2002-07-01	0.26263
2002-10-01	0.40599
2003-01-01	1.03099
2003-04-01	0.83164
2003-07-01	1.03141
2003-10-01	0.84363
2004-01-01	0.26863
2004-04-01	0.26930
2004-07-01	0.36930
2004-10-01	0.37902
2005-01-01	0.47900
2005-04-01	0.68780
2005-07-01	0.38789
2005-10-01	0.36733
2006-01-01	0.77628
2006-04-01	0.55989
2006-07-01	0.80880
2006-10-01	0.80838
2007-01-01	0.25000
2007-04-01	0.25000
2007-07-01	0.02908
2007-10-01	0.02966
2008-01-01	0.03179
2008-04-01	0.47987
2008-07-01	0.70547
2008-10-01	0.87121
2009-01-01	1.31213
2009-04-01	1.20084
2009-07-01	0.93620
2009-10-01	0.78620
2010-01-01	0.33620
2010-04-01	0.14380
2010-07-01	0.44380
2010-10-01	0.44380
2011-01-01	0.44380
2011-04-01	0.30000
2012-01-01	0.15000
2012-04-01	0.15000
2012-07-01	0.15000
2012-10-01	0.15000
2013-10-01	0.10000
2014-01-01	0.30000
2014-04-01	0.30000
2014-07-01	0.80000
2014-10-01	1.10000
2015-01-01	1.05000
2015-04-01	1.05000