1983 August 9 1984 May 1 1984 May 29 1986 February 18 1986 February 25 1986 March 4 1986 March 18 1986 October 28 1986 November 18 1996 May 9 1996 August 22 1996 December 19 1998 October 22 2006 July 14 2008 May 12 2009 June 8 2010 October 18 2010 October 26