Quarter	Billions of US Dollars
1993-07-01	0.37050
1993-10-01	0.58550
1994-01-01	0.75450
1994-04-01	0.55200
1994-07-01	0.41130
1994-10-01	0.78975
1995-01-01	0.39135
1995-04-01	0.73073
1995-07-01	0.50234
1995-10-01	0.70286
1996-01-01	0.34008
1996-04-01	0.93009
1996-07-01	0.53271
1996-10-01	0.38960
1997-01-01	0.17340
1997-04-01	0.13200
1997-07-01	0.82504
1997-10-01	0.15830
1998-01-01	0.52147
1998-04-01	0.36810
1998-07-01	0.53723
1998-10-01	0.41463
1999-01-01	0.41263
1999-04-01	0.62918
1999-07-01	0.29835
1999-10-01	0.56538
2000-01-01	0.64144
2000-04-01	0.64771
2000-07-01	0.85220
2000-10-01	0.46204
2001-01-01	0.46308
2001-04-01	0.12319
2001-07-01	0.20243
2001-10-01	0.15519
2002-04-01	0.01000
2008-04-01	0.06500
2011-10-01	0.08500