Quarter	Billions of US Dollars
1997-04-01	0.01196
1997-10-01	-0.00862
1999-04-01	0.02700
1999-07-01	0.01400
1999-10-01	-0.03800
2000-01-01	0.01080
2000-04-01	0.08620
2000-10-01	0.08000
2001-04-01	-0.10000
2001-07-01	0.00850
2001-10-01	-0.08000
2002-10-01	-0.00250
2003-07-01	-0.00300
2003-10-01	-0.00200
2004-04-01	-0.00100
2014-07-01	0.04996
2014-10-01	-0.00100
2015-04-01	0.13192