Akrasenee 17 March 1992 - 28 November 1996 Maruey Phadoongsidhi 17 March 1992 - 24 October 1997 Suphachai Phisitvanich 17 July 1992 - 8 October 1992 Amorn Chandara-Somboon 28 July 1992 - 21 June 2004