1982-01-21 1985-08-22 1987-01-01 1991-09-18 1981-05-10 1988-01-01 1988-12-01 1981-11-29 1990-04-05 1985-01-01 1981-10-08 1990-11-15 2000-07-23 1990-01-01 1990-01-01 1978-08-31 1984-04-05 1985-01-01 1989-01-01 1989-12-07 1990-03-29 1979-10-25 1990-01-01