Quarter	Billions of US Dollars
1975-10-01	0.01750
1978-07-01	0.10420
1979-01-01	0.03730
1979-07-01	0.02540
1980-07-01	0.04550
1981-04-01	0.04640
1982-04-01	0.20000
1982-07-01	0.03730
1982-10-01	0.07500
1983-01-01	0.03650
1983-07-01	0.29240
1986-01-01	0.30000
1988-10-01	0.16080
1990-07-01	0.36950
1990-10-01	0.26000
1991-01-01	0.07500
1991-04-01	0.13500
1991-10-01	0.03340
1992-01-01	0.07590
1992-04-01	0.04210
1992-07-01	0.35640
1992-10-01	0.12000
1993-01-01	0.03000
1993-10-01	0.44500
1994-01-01	0.15900
1994-04-01	1.00000
1994-07-01	0.44900
1994-10-01	0.10000
1995-01-01	0.02000
1995-07-01	0.43460
1995-10-01	0.31400
1996-01-01	1.46050
1996-04-01	1.01938
1996-07-01	1.99283
1996-10-01	2.13925
1997-01-01	1.27472
1997-04-01	2.13778
1997-07-01	2.27504
1997-10-01	1.87055
1998-01-01	0.00059
1998-04-01	0.53173
1998-07-01	0.01323
1998-10-01	0.80516
1999-01-01	0.46787
1999-04-01	0.88235
2000-01-01	0.79127
2001-01-01	0.01201
2001-10-01	0.12500
2002-01-01	0.10000
2002-04-01	0.43000
2002-07-01	0.62500
2002-10-01	0.15000
2003-01-01	0.35500
2003-04-01	1.17000
2003-07-01	0.50000
2003-10-01	0.30000
2004-01-01	1.12500
2004-07-01	0.27000
2005-01-01	0.20000
2005-04-01	2.00000
2005-07-01	0.44500
2005-10-01	1.76100
2006-01-01	2.00000
2006-04-01	0.28500
2006-07-01	1.21800
2006-10-01	1.83000
2007-01-01	1.55000
2007-04-01	2.84500
2007-07-01	0.33800
2008-01-01	2.00000
2008-04-01	2.20000
2009-01-01	5.00000
2009-04-01	1.17000
2009-07-01	1.78364
2009-10-01	3.31203
2010-01-01	3.16000
2010-04-01	0.87061
2010-07-01	0.80000
2010-10-01	0.85768
2011-01-01	0.30500
2011-04-01	4.11500
2011-10-01	3.00000
2012-01-01	4.15000
2012-04-01	6.15000
2012-07-01	0.36370
2012-10-01	3.26864
2013-01-01	2.51500
2013-04-01	5.67314
2013-07-01	2.70000
2013-10-01	0.15000
2014-01-01	4.25500
2014-04-01	3.49767
2014-07-01	5.34740
2014-10-01	0.47966
2015-01-01	7.06645
2015-04-01	9.02221