1995
late 1970s and 1980s
1997
1980
1980-1989
1985
1984
1986
1996
1982
1990s
1984; 1983
circa 1983
1983
1993
(1962); 1982
1989
1990-1991
1990-1997
1987
1981-1982
1994
1980-1990
1981-1990
1988-1993
1981
2000-100 BCE
1990
1988