Quarter	Millions of US Dollars
1972-04-01	32
1972-10-01	20
1976-10-01	34
1977-01-01	62
1977-10-01	62
1982-04-01	-42
1983-01-01	-42
1985-10-01	-33
1986-01-01	-4
1986-10-01	-75
1987-10-01	-2
1988-10-01	-80
1989-01-01	-25