1979-09-17 1981-02-11 1982-02-26 1982-07-30 1982-12-18 1983-09-10 1983-11-12 1983-12-10 1985-11-16 1987-07-01 1991-01-01 1991-10-11 1993-07-24 1995-05-29 1998-01-10 1981-05-15 1982-02-12 2013-06-15 2016-07-02 1980-11-01 1984-01-13 1983-07-14 1982-02-06 1981-10-03