1981-02-01 1980-09-24 1979-11-16 1979-04-19 1981-07-01 1980-03-07 1981-11-08 1978-11-23 1979-02-27 1981-12-28 1981-06-01 1985-05-31 2005-01-24 1976-10-08 1981-01-01 1987-01-01 2010-12-22 1982-01-01 1981-01-01 1980-01-01 1980-11-21 1993-08-22 1982-01-01 1993-08-22 1981-01-01 1982-01-01 1981-03-13 1980-01-01 1983-01-01 1981-01-01 1979-01-01