Quarter	Billions of US Dollars
1975-04-01	0.05340
1975-07-01	0.02500
1978-07-01	0.02500
1979-01-01	0.04850
1979-04-01	0.03500
1980-07-01	0.08110
1980-10-01	0.02920
1981-04-01	0.03000
1982-07-01	-0.02500
1985-07-01	-0.03500
1985-10-01	-0.00141
1986-01-01	-0.02500
1986-07-01	-0.07295
1986-10-01	-0.05824
1990-04-01	-0.05340
1991-01-01	0.24529
1993-04-01	0.33260
1993-10-01	0.10000
1994-01-01	-0.11075
1994-10-01	0.10000
1996-01-01	0.43000
1996-04-01	0.72000
1996-07-01	0.44000
1996-10-01	0.80000
1997-01-01	0.75000
1997-07-01	0.30000
1997-10-01	0.65000
1998-04-01	0.50000
1998-10-01	0.41300
1999-01-01	0.20000
1999-04-01	1.20000
1999-07-01	0.28629
2000-07-01	0.30000
2001-04-01	0.60500
2001-07-01	0.35613
2001-10-01	0.65000
2002-04-01	0.86392
2002-07-01	0.37052
2002-10-01	0.81574
2003-01-01	0.92815
2003-04-01	0.24861
2003-07-01	0.85998
2003-10-01	-0.26297
2004-01-01	0.84345
2004-07-01	-0.25311
2004-10-01	1.20000
2005-01-01	-0.08250
2005-04-01	0.15000
2005-07-01	-0.06050
2005-10-01	-0.20000
2006-01-01	-0.65681
2006-04-01	0.10000
2006-07-01	-0.20000
2006-10-01	0.20000
2007-01-01	0.13351
2007-07-01	-0.68708
2007-10-01	-0.18500
2008-01-01	-0.60905
2008-04-01	-0.06531
2008-07-01	-0.00772
2009-01-01	0.59052
2009-04-01	-1.05700
2009-07-01	0.85063
2009-10-01	1.45137
2010-01-01	0.49020
2010-04-01	0.88000
2010-07-01	3.41808
2010-10-01	2.55681
2011-01-01	2.14540
2011-04-01	0.22554
2011-07-01	1.04001
2011-10-01	1.76562
2012-01-01	0.30000
2012-04-01	-0.13187
2012-07-01	2.96953
2012-10-01	2.69334
2013-01-01	2.10900
2013-04-01	2.09786
2013-07-01	1.71062
2013-10-01	3.63308
2014-01-01	0.12191
2014-04-01	1.83209
2014-07-01	5.34417
2014-10-01	4.98517
2015-01-01	0.87014
2015-04-01	4.54313