1981-06-21 1983-06-21 1983-06-21 1983-06-21 1982-07-23 1987-09-04 1986-06-22 1986-11-27 1987-02-11 1996-06-22 1993-07-04 1992-07-09 1986-07-04 1989-03-31 1984-07-04 1984-09-07 1979-08-06 1981-09-10 1988-04-14 2007-12-21 1998-09-19 1992-08-20 1982-08-05 1995-12-05 2006-09-17 2002-10-31 1981-12-10 2013-01-16 2013-09-14 2009-03-31 2014-01-31 2014-12-05 1981-06-12 1983-06-21 2016-04-22