Quarter	Billions of US Dollars
1987-01-01	0.27000
1987-04-01	0.07500
1987-07-01	0.07500
1987-10-01	0.05000
1988-01-01	0.05000
1988-04-01	0.15000
1988-07-01	0.05000
1991-10-01	0.07700
1992-01-01	0.20200
1992-04-01	0.23500
1992-07-01	0.30000
1992-10-01	0.43200
1993-01-01	0.69700
1993-04-01	0.85200
1993-07-01	1.20180
1993-10-01	1.70520
1994-01-01	1.94270
1994-04-01	1.99970
1994-07-01	2.47404
1994-10-01	2.70434
1995-01-01	2.24721
1995-04-01	2.33316
1995-07-01	2.31967
1995-10-01	2.28244
1996-01-01	1.86315
1996-04-01	1.98859
1996-07-01	2.11367
1996-10-01	2.39422
1997-01-01	2.46714
1997-04-01	2.70364
1997-07-01	3.06284
1997-10-01	2.89730
1998-01-01	3.04587
1998-04-01	3.89815
1998-07-01	3.35114
1998-10-01	3.14103
1999-01-01	3.07395
1999-04-01	2.86704
1999-07-01	2.77111
1999-10-01	2.87661
2000-01-01	3.06961
2000-04-01	2.50820
2000-07-01	2.43314
2000-10-01	2.19220
2001-01-01	2.18533
2001-04-01	1.56034
2001-07-01	1.48084
2001-10-01	1.34246
2002-01-01	1.28268
2002-04-01	1.33986
2002-07-01	1.04502
2002-10-01	0.97342
2003-01-01	0.86151
2003-04-01	0.87858
2003-07-01	0.88580
2003-10-01	0.71717
2004-01-01	1.23764
2004-04-01	1.23556
2004-07-01	1.24321
2004-10-01	1.31331
2005-01-01	1.29361
2005-04-01	1.11693
2005-07-01	1.11617
2005-10-01	1.21548
2006-01-01	1.42011
2006-04-01	1.65194
2006-07-01	1.55126
2006-10-01	1.67784
2007-01-01	1.72976
2007-04-01	2.15717
2007-07-01	2.16587
2007-10-01	2.17287
2008-01-01	2.18695
2008-04-01	2.18633
2008-07-01	2.16747
2008-10-01	1.96249
2009-01-01	1.95463
2009-04-01	1.96741
2009-07-01	1.97398
2009-10-01	1.97092
2010-01-01	1.95895
2010-04-01	1.79124
2010-07-01	1.70108
2010-10-01	1.49738
2011-01-01	1.50829
2011-04-01	1.81147
2011-07-01	1.79920
2011-10-01	1.79192
2012-01-01	1.79731
2012-04-01	1.51242
2012-07-01	1.51681
2012-10-01	1.52021
2013-01-01	1.51519
2013-04-01	1.51874
2013-07-01	1.52423
2013-10-01	0.90000
2014-01-01	0.90000
2014-04-01	0.90000
2014-07-01	0.90000
2014-10-01	0.90000
2015-01-01	0.90000
2015-04-01	0.90000