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	0.30200
1992-04-01	0.40500
1992-07-01	0.57000
1992-10-01	0.70200
1993-01-01	1.00700
1993-04-01	1.16200
1993-07-01	1.49180
1993-10-01	2.01720
1994-01-01	2.45820
1994-04-01	2.42370
1994-07-01	2.79154
1994-10-01	2.97214
1995-01-01	2.61146
1995-04-01	2.57726
1995-07-01	2.56632
1995-10-01	2.42964
1996-01-01	2.18160
1996-04-01	2.60229
1996-07-01	2.75407
1996-10-01	2.97322
1997-01-01	3.05974
1997-04-01	3.36864
1997-07-01	4.24754
1997-10-01	3.98015
1998-01-01	4.26140
1998-04-01	5.47865
1998-07-01	4.58876
1998-10-01	4.58251
1999-01-01	4.45579
1999-04-01	4.45532
1999-07-01	4.34594
1999-10-01	4.44072
2000-01-01	4.63943
2000-04-01	4.46328
2000-07-01	3.93604
2000-10-01	3.69774
2001-01-01	3.75441
2001-04-01	2.92567
2001-07-01	2.79202
2001-10-01	2.67651
2002-01-01	2.33568
2002-04-01	2.23046
2002-07-01	1.93562
2002-10-01	1.71402
2003-01-01	1.60211
2003-04-01	1.62093
2003-07-01	1.62815
2003-10-01	1.09717
2004-01-01	1.61764
2004-04-01	1.53056
2004-07-01	1.53821
2004-10-01	1.56331
2005-01-01	1.39361
2005-04-01	1.16093
2005-07-01	1.16028
2005-10-01	1.24512
2006-01-01	1.38908
2006-04-01	1.64694
2006-07-01	1.54626
2006-10-01	1.70284
2007-01-01	1.75476
2007-04-01	2.32861
2007-07-01	2.33464
2007-10-01	2.34168
2008-01-01	2.35490
2008-04-01	2.36108
2008-07-01	2.33693
2008-10-01	2.16857
2009-01-01	2.15125
2009-04-01	2.16155
2009-07-01	2.16669
2009-10-01	2.16497
2010-01-01	2.15059
2010-04-01	1.86624
2010-07-01	1.77608
2010-10-01	1.57238
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