Quarter	Billions of US Dollars
1997-04-01	0.005418
1997-07-01	0.005418
1997-10-01	0.005418
1998-01-01	0.005418
1998-04-01	0.006257
1998-07-01	0.005748
1998-10-01	0.005748
1999-01-01	0.005748
1999-04-01	0.004779
1999-07-01	0.004779
1999-10-01	0.004779
2000-01-01	0.004779
2004-01-01	0.016000
2004-04-01	0.016000
2004-07-01	0.016000
2004-10-01	0.016000