Quarter	Billions of US Dollars
1972-10-01	0.05000
1974-04-01	0.01720
1976-07-01	0.36720
1976-10-01	0.01140
1977-01-01	0.03760
1977-04-01	0.03660
1977-07-01	0.04390
1978-01-01	0.11400
1978-07-01	0.02560
1978-10-01	0.07640
1979-01-01	0.02990
1979-04-01	0.04630
1979-07-01	0.10000
1980-07-01	0.07110
1981-10-01	0.06760
1982-01-01	0.03000
1990-04-01	0.86240
1992-10-01	3.34824
1993-01-01	0.15000
1993-04-01	0.17500
1993-07-01	0.19000
1993-10-01	0.60920
1994-01-01	0.15308
1994-04-01	0.40500
1994-07-01	0.42500
1994-10-01	0.21400
1995-04-01	0.09000
1995-07-01	0.54800
1995-10-01	0.26730
1996-01-01	0.12500
1996-04-01	0.94147
1996-07-01	1.79921
1996-10-01	1.45387
1997-01-01	1.19549
1997-04-01	1.25736
1997-07-01	0.86560
1997-10-01	0.29915
1998-01-01	0.77343
1998-04-01	0.80063
1998-07-01	0.34142
1998-10-01	0.00030
1999-01-01	2.09266
1999-04-01	0.78502
1999-07-01	1.20452
1999-10-01	1.66629
2000-01-01	1.83107
2000-04-01	0.21309
2000-07-01	0.42527
2000-10-01	0.00074
2001-04-01	0.40000
2001-07-01	0.05230
2001-10-01	1.69011
2002-01-01	2.30000
2002-04-01	1.85000
2002-07-01	1.40000
2002-10-01	1.42382
2003-01-01	3.32061
2003-04-01	1.50000
2003-07-01	1.30500
2003-10-01	1.45000
2004-01-01	2.13793
2004-04-01	0.65000
2004-07-01	1.65808
2005-01-01	1.95000
2005-04-01	0.75000
2005-07-01	1.40000
2006-01-01	2.51476
2006-04-01	0.12500
2006-07-01	1.75420
2006-10-01	0.75000
2007-01-01	1.30000
2008-01-01	0.76000
2008-07-01	0.35000
2009-01-01	1.50000
2009-04-01	1.00000
2009-07-01	1.33500
2009-10-01	1.72070
2010-01-01	3.08633
2010-04-01	0.20000
2010-07-01	1.93748
2010-10-01	1.45760
2011-01-01	3.65104
2011-04-01	1.07500
2011-10-01	0.05000
2012-01-01	3.07500
2012-04-01	0.27500
2012-10-01	1.25021
2013-01-01	2.60000
2013-04-01	1.05000
2013-07-01	0.40750
2013-10-01	0.30000
2014-01-01	1.50000
2014-04-01	1.32500
2014-07-01	0.25000
2015-01-01	3.86400
2015-04-01	0.49950