January 01, 1979
January 01, 1980
January 01, 1980
January 01, 1981
January 01, 1982
January 01, 1982
January 01, 1983
January 01, 1984
January 01, 1984
January 01, 1985
January 01, 1985
December 31, 1986
January 03, 1987
April 03, 1988
December 10, 1988