Quarter	Billions of US Dollars
1975-04-01	0.0160
1977-07-01	0.0680
1978-01-01	0.0873
1978-04-01	0.0977
1978-10-01	0.0814
1979-01-01	0.1688
1979-04-01	0.1789
1979-07-01	0.0471
1979-10-01	0.0868
1980-07-01	0.1395
1980-10-01	0.0250
1981-04-01	0.1999
1981-10-01	0.1500
1982-01-01	0.1000
1990-10-01	0.0210
1991-04-01	0.0650
1991-07-01	0.3000
1991-10-01	0.4500
1992-01-01	0.0500
1992-04-01	17.4513
1992-07-01	0.8200
1992-10-01	0.0300
1993-01-01	0.5100
1993-04-01	0.3760
1993-07-01	1.5492
1993-10-01	11.4785
1994-01-01	0.9332
1994-04-01	0.4732
1994-07-01	0.7913
1994-10-01	2.3685
1995-01-01	0.2185
1995-04-01	2.0216
1995-07-01	1.9133
1995-10-01	2.5402
1996-01-01	3.1684
1996-04-01	8.9171
1996-07-01	8.0652
1996-10-01	4.6660
1997-01-01	5.5170
1997-04-01	4.1152
1997-07-01	6.4586
1997-10-01	1.9269
1998-01-01	5.6381
1998-04-01	6.4224
1998-07-01	2.3523
1998-10-01	2.8490
1999-01-01	4.0342
1999-04-01	4.1303
1999-07-01	2.4634
1999-10-01	4.0748
2000-01-01	5.2681
2000-04-01	5.6652
2000-07-01	4.0141
2000-10-01	0.2659
2001-01-01	4.0587
2001-04-01	30.8915
2001-07-01	0.6813
2001-10-01	1.3823
2002-01-01	0.1737
2002-04-01	0.0066
2002-07-01	0.1619
2002-10-01	0.1549
2003-01-01	0.0014
2003-04-01	0.0001
2003-07-01	0.0015
2004-01-01	0.7218
2004-07-01	0.0035
2004-10-01	0.2944
2005-01-01	18.0989
2005-04-01	0.0300
2005-07-01	0.0097
2005-10-01	0.4400
2006-01-01	0.2000
2006-04-01	0.2760
2006-07-01	0.0755
2006-10-01	1.0850
2007-01-01	0.3000
2007-04-01	1.4437
2007-07-01	0.4700
2007-10-01	0.2250
2008-01-01	0.0200
2008-04-01	0.0182
2008-10-01	0.0150
2009-01-01	0.1134
2009-04-01	0.0955
2009-07-01	0.5000
2009-10-01	0.0502
2010-04-01	1.7298
2010-07-01	1.6495
2010-10-01	1.3558
2011-01-01	1.3150
2011-04-01	0.6297
2011-07-01	0.6713
2012-01-01	0.6000
2012-04-01	0.2105
2012-07-01	0.1080
2013-01-01	0.3001
2013-04-01	0.2000
2013-07-01	0.5500
2013-10-01	0.5000
2014-04-01	1.5300
2014-07-01	0.0001
2014-10-01	0.1208
2015-01-01	1.5366
2015-04-01	2.0550