Quarter	Billions of US Dollars
1993-07-01	4.56883
1993-10-01	4.19576
1994-01-01	4.12389
1994-04-01	2.52288
1994-07-01	2.09347
1994-10-01	2.16019
1995-01-01	1.18343
1995-04-01	0.97356
1995-07-01	1.18756
1995-10-01	0.66402
1996-01-01	0.67204
1996-04-01	0.72180
1996-07-01	0.23168
1996-10-01	0.37888
1997-01-01	0.28432
1997-04-01	0.13350
1997-07-01	0.26358
1997-10-01	0.27114
1998-01-01	0.24491
1998-04-01	0.19057
1998-07-01	0.14997
1998-10-01	0.07710
1999-01-01	0.12947
1999-04-01	0.21821
1999-07-01	0.30234
1999-10-01	0.33787
2000-01-01	0.35691
2000-04-01	0.29839
2000-07-01	0.19399
2000-10-01	0.17738
2001-01-01	0.15209
2001-04-01	0.08186
2001-07-01	0.06184
2001-10-01	0.07238
2002-01-01	0.06173
2002-04-01	0.19466
2002-07-01	0.18831
2002-10-01	0.17761
2003-01-01	0.39583
2003-04-01	0.23996
2003-07-01	0.24901
2003-10-01	0.25316
2004-01-01	0.03873
2004-04-01	0.04702
2004-07-01	0.06085
2004-10-01	0.05894
2005-01-01	0.05660
2005-04-01	0.04373
2005-07-01	0.01147
2005-10-01	0.00513
2006-01-01	0.00076
2006-04-01	0.00052