[ 1980 - ]
1980 - Unknown 1980 - January 1980 - February 1980 - March 1980 - April 1980 - May 1980 - June 1980 - July 1980 - August 1980 - September 1980 - October 1980 - November 1980 - December 1981 - Unknown 1981 - January 1981 - February 1981 - March 1981 - April 1981 - May 1981 - June 1981 - July 1981 - August 1981 - September 1981 - October 1981 - November 1981 - December 1982 - Unknown 1982 - January 1982 - February 1982 - March 1982 - April 1982 - May 1982 - June 1982 - July 1982 - August 1982 - September 1982 - October 1982 - November 1982 - December 1983 - January 1983 - February 1983 - May 1983 - June 1983 - July 1983 - August 1983 - September 1983 - October 1983 - November 1983 - December 1984 - Unknwon 1984 - January 1984 - February 1984 - March 1984 - April 1984 - May 1984 - June 1984 - July 1984 - August 1984 - October 1984 - December [ - 1984 ]