1980-03-19 1978-04-01 1976-06-04 1981-08-06 1978-10-20 1976-10-21 1982-01-01 1979-12-27 1979-03-23 1980-04-23 1978-08-29 1978-10-06 1979-12-08 1977-01-01 1980-06-26 1980-08-10 1980-10-30 1981-04-24 1980-02-14 1981-12-09 1978-01-01 1979-01-01 1979-06-01 1980-10-16 1977-03-01 1981-04-09 1975-01-01 1978-01-01 1975-10-23 1980-01-01 1976-01-01 1979-01-01 1980-01-01 1981-10-16 1977-07-03