Quarter	Millions of US Dollars
1972-04-01	0
1972-07-01	0
1972-10-01	0
1973-01-01	0
1973-04-01	0
1973-07-01	0
1973-10-01	0
1974-01-01	0
1974-04-01	0
1974-07-01	0
1974-10-01	0
1975-01-01	0
1975-04-01	0
1975-07-01	0
1975-10-01	0
1976-01-01	0
1976-04-01	0
1976-07-01	0
1976-10-01	0
1977-01-01	0
1977-04-01	0
1977-07-01	0
1977-10-01	0
1978-01-01	0
1978-04-01	0
1978-07-01	0
1978-10-01	0
1979-01-01	0
1979-04-01	0
1979-07-01	0
1979-10-01	0
1980-01-01	0
1980-04-01	0
1980-07-01	0
1980-10-01	0
1981-01-01	0
1981-04-01	42
1981-07-01	43
1981-10-01	44
1982-01-01	83
1982-04-01	41
1982-07-01	40
1982-10-01	42
1983-01-01	0
1983-04-01	0
1983-07-01	0
1983-10-01	0
1984-01-01	0
1984-04-01	0
1984-07-01	0
1984-10-01	30
1985-01-01	34
1985-04-01	34
1985-07-01	36
1985-10-01	64
1986-01-01	67
1986-04-01	73
1986-07-01	78
1986-10-01	2
1987-01-01	2
1987-04-01	2
1987-07-01	2
1987-10-01	82
1988-01-01	110
1988-04-01	101
1988-07-01	99
1988-10-01	27