Quarter	Billions of US Dollars
1987-01-01	0.15900
1987-04-01	0.19400
1987-07-01	0.23100
1987-10-01	0.20800
1988-01-01	0.26800
1988-04-01	0.28500
1988-07-01	0.21500
1988-10-01	0.17300
1989-01-01	0.25400
1989-04-01	0.23900
1989-07-01	0.24800
1989-10-01	0.22700
1990-01-01	0.23000
1990-04-01	0.27400
1990-07-01	0.25000
1990-10-01	0.26300
1991-01-01	0.30800
1991-04-01	0.29900
1991-07-01	0.26300
1991-10-01	0.25000
1992-01-01	0.28500
1992-04-01	0.28800
1992-07-01	0.27500
1992-10-01	0.26000
1993-01-01	0.28400
1993-04-01	0.23400
1993-07-01	0.22300
1993-10-01	0.22700
1994-01-01	0.19900
1994-04-01	0.17900
1994-07-01	0.25700
1994-10-01	0.26500
1995-01-01	0.29000
1995-04-01	0.31800
1995-07-01	0.30122
1995-10-01	0.29598
1996-01-01	0.39980
1996-04-01	0.27396
1996-07-01	0.30599
1996-10-01	0.26258
1997-01-01	0.25170
1997-04-01	0.22800
1997-07-01	0.20214
1997-10-01	0.19289
1998-01-01	0.14419
1998-04-01	0.12600
1998-07-01	0.18200
1998-10-01	0.18696
1999-01-01	0.31567
1999-04-01	0.36895
1999-07-01	0.61016
1999-10-01	0.74135
2000-01-01	0.62753
2000-04-01	0.86511
2000-07-01	0.95900
2000-10-01	0.84698
2001-01-01	0.93363
2001-04-01	0.77630
2001-07-01	0.80017
2001-10-01	0.85644
2002-01-01	0.47499
2002-04-01	0.34533
2002-07-01	0.62623
2002-10-01	0.77453
2003-01-01	0.97312
2003-04-01	1.39549
2003-07-01	1.38312
2003-10-01	1.71525
2004-01-01	1.70754
2004-04-01	1.90505
2004-07-01	2.01755
2004-10-01	2.11821
2005-01-01	1.50472
2005-04-01	1.87053
2005-07-01	1.58784
2005-10-01	2.14487
2006-01-01	2.01586
2006-04-01	1.40176
2006-07-01	1.87480
2006-10-01	2.41907
2007-01-01	2.29504
2007-04-01	2.59340
2007-07-01	2.28976
2007-10-01	2.26484
2008-01-01	2.60977
2008-04-01	1.82627
2008-07-01	1.56125
2008-10-01	0.53274
2009-01-01	0.13754
2009-04-01	0.09127
2009-10-01	0.04585
2010-01-01	0.04470
2010-04-01	0.04380
2010-07-01	0.04931
2010-10-01	0.06362
2011-01-01	0.06417