Quarter	Billions of US Dollars
1990-01-01	0.06500
1993-07-01	0.02700
1993-10-01	0.04300
1994-01-01	0.05850
1994-04-01	0.04650
1994-07-01	0.03150
1994-10-01	0.02150
1995-10-01	2.10865
1996-01-01	2.10502
1996-04-01	2.29964
1996-07-01	2.41911
1996-10-01	2.39258
1997-01-01	2.36547
1997-04-01	2.36481
1997-07-01	2.50552
1997-10-01	2.50564
1998-01-01	2.48499
1998-04-01	2.83574
1998-07-01	2.91167
1998-10-01	3.11961
1999-01-01	3.05803
1999-04-01	3.02633
1999-07-01	3.17133
1999-10-01	3.11412
2000-01-01	3.07932
2000-04-01	3.10034
2000-07-01	3.04823
2000-10-01	3.09520
2001-01-01	3.05011
2001-04-01	3.02260
2001-07-01	3.10782
2001-10-01	3.07524
2002-01-01	3.07258
2002-04-01	3.18488
2002-07-01	2.87792
2002-10-01	0.91983
2003-01-01	0.93560
2003-04-01	0.93346
2003-07-01	0.87978
2003-10-01	0.72298
2004-01-01	0.70088
2004-04-01	0.37885
2004-07-01	0.37713
2004-10-01	0.41976
2005-01-01	0.39742
2005-04-01	0.36968
2005-07-01	0.36816
2005-10-01	0.26630
2006-01-01	0.26806
2006-04-01	0.28388
2006-07-01	0.15953
2006-10-01	0.16389
2007-01-01	0.16377
2007-04-01	0.16305
2009-04-01	0.20000
2009-07-01	0.20000
2009-10-01	0.20000
2010-01-01	0.20000
2010-04-01	0.20000
2010-07-01	0.20000
2010-10-01	0.20000
2011-01-01	0.20000
2011-04-01	0.20000
2011-07-01	0.20000
2011-10-01	0.20000
2012-01-01	0.20000
2012-04-01	0.70000
2012-07-01	0.70000
2012-10-01	0.70000
2013-01-01	0.70000
2013-04-01	2.13729
2013-07-01	2.42559
2013-10-01	2.61080
2014-01-01	2.84470
2014-04-01	3.78866
2014-07-01	3.65356
2014-10-01	3.68304
2015-01-01	3.60362
2015-04-01	3.37718