1983-06-03 1987-01-16 1986-04-02 1988-09-16 1990-05-25 1983-01-01 1973-05-09 1988-02-07 1981-11-01 1985-10-15 1972-06-01 1988-09-30 1979-06-15 1986-01-31 1988-09-17 1979-05-01 1978-06-30 1980-12-17 1979-11-07 1977-12-18 1981-08-21 1980-06-27 1986-10-21 1979-05-11 1981-10-13 1977-01-01 1987-01-16