Quarter	Billions of US Dollars
1994-04-01	0.01567
1994-07-01	0.01615
1994-10-01	0.01614
1995-01-01	0.01807
1995-04-01	0.03614
1995-07-01	0.03524
1995-10-01	0.03488
1996-01-01	0.03388
1998-01-01	0.00647
1998-04-01	0.10647
1998-07-01	0.10647
1998-10-01	0.10647
1999-01-01	0.11121
1999-04-01	0.07477
1999-07-01	0.22340
1999-10-01	0.22348
2000-01-01	0.36035
2000-04-01	0.39107
2000-07-01	0.26739
2000-10-01	0.28410
2001-01-01	0.12939
2001-04-01	0.07388
2001-07-01	0.04353
2001-10-01	0.03220
2002-01-01	0.18220
2002-10-01	0.02500
2003-01-01	0.12500
2003-04-01	0.29641
2003-07-01	0.31090
2003-10-01	0.45588
2004-01-01	0.51898
2004-04-01	0.40762
2004-07-01	0.97339
2004-10-01	1.22254
2005-01-01	1.40638
2005-04-01	1.92331
2005-07-01	1.87103
2005-10-01	1.87110
2006-01-01	2.13749
2006-04-01	2.20810
2006-07-01	2.07995
2006-10-01	3.08476
2007-01-01	2.57449
2007-04-01	2.52066
2007-07-01	2.45083
2007-10-01	1.38625
2008-01-01	2.28108
2008-04-01	1.96616
2008-07-01	2.79056
2008-10-01	4.32728
2009-01-01	3.52184
2009-04-01	3.08799
2009-07-01	3.12684
2009-10-01	1.11404
2010-01-01	1.38915
2010-04-01	2.54348
2010-07-01	3.64891
2010-10-01	3.79625
2011-01-01	3.95314
2011-04-01	5.31349
2011-07-01	3.70418
2011-10-01	4.46482
2012-01-01	6.06294
2012-04-01	4.70365
2012-07-01	7.45080
2012-10-01	6.94898
2013-01-01	6.22634
2013-04-01	6.33184
2013-07-01	7.11077
2013-10-01	5.96777
2014-01-01	4.79051
2014-04-01	4.07701
2014-07-01	1.23399
2014-10-01	4.39368
2015-01-01	4.48235
2015-04-01	5.55160