Quarter	Billions of US Dollars
1987-01-01	0.26050
1987-04-01	0.26100
1987-07-01	0.26297
1987-10-01	0.28715
1988-01-01	0.28798
1988-04-01	0.27093
1988-07-01	0.26855
1988-10-01	0.28095
1989-01-01	0.26888
1989-04-01	0.10000
1989-07-01	0.10000
1989-10-01	0.10000
1990-01-01	0.10000
1990-04-01	0.10000
1990-07-01	0.10000
1990-10-01	0.10000
1991-01-01	0.10000
1991-04-01	0.10000
1991-07-01	0.10000
1991-10-01	0.10000
1992-01-01	0.10000
1992-04-01	0.10000
1992-07-01	0.10000
1992-10-01	0.10000
1993-07-01	0.01000
1994-07-01	0.01500
1995-10-01	0.03000
1996-01-01	0.04600
1996-04-01	0.18212
1996-07-01	0.35955
1996-10-01	0.53277
1997-01-01	0.67430
1997-04-01	0.70134
1997-07-01	0.98142
1997-10-01	0.49659
1998-01-01	0.42233
1998-04-01	0.32583
1998-07-01	0.17734
1998-10-01	0.06747
1999-01-01	0.03721
1999-04-01	0.09683
1999-07-01	0.16399
1999-10-01	0.06749
2000-01-01	0.04697
2000-04-01	0.04433
2000-07-01	0.04331
2000-10-01	0.04331
2001-01-01	0.04331
2001-04-01	0.04331
2001-07-01	0.04331
2001-10-01	0.03382
2002-01-01	0.02732
2002-04-01	0.02429
2002-07-01	0.02429
2002-10-01	0.02125
2003-01-01	0.02125
2003-04-01	0.01822
2003-07-01	0.01822
2003-10-01	0.01822
2004-01-01	0.01822
2004-04-01	0.01832
2004-07-01	0.01822
2004-10-01	0.31832
2005-01-01	0.31822
2005-04-01	0.32722
2005-07-01	0.35322
2005-10-01	0.39072
2006-01-01	0.35572
2006-04-01	0.34750
2006-07-01	0.34270
2006-10-01	0.33720
2007-01-01	0.33020
2007-04-01	0.33020
2007-07-01	0.30020
2007-10-01	0.33020
2008-01-01	0.33048
2008-04-01	0.33666
2008-07-01	0.33701
2008-10-01	0.33704
2009-01-01	0.33750
2009-04-01	0.30384
2009-07-01	0.33098
2009-10-01	0.03241
2010-01-01	0.15431
2010-04-01	0.15556
2010-07-01	0.16751
2010-10-01	0.21938
2011-01-01	0.26112
2011-04-01	0.76196
2011-07-01	0.78239
2011-10-01	0.78544
2012-01-01	0.80084
2012-04-01	0.67589
2012-07-01	0.66206
2012-10-01	1.16774
2013-01-01	1.17902
2013-04-01	1.22280
2013-07-01	1.26605
2013-10-01	1.36948
2014-01-01	1.95422
2014-04-01	1.70936
2014-07-01	1.69911
2014-10-01	1.67509
2015-01-01	1.64965
2015-04-01	1.64746