1986 March 6 1986 October 10 1986 October 13 1989 March 5 1989 April 24 1994 March 6 1994 May 30 1996 May 16 1998 September 27 1998 October 16 1998 October 18 1999 June 11 2001 September 16 2002 April 19 2002 April 24 2003 July 7 2005 April 19 2005 July 29 2006 June 12 2006 October 12 2009 June 3 2009, December 9 2010 December 21 2011, May 16 2014, June 12