When did Anthrax form?
1981
1983
1983
1983
1983
1983
1983
1983
1983
1983
1983
1983
1983
1983
1983
1983
1984
1983
1984
1983
1984
1983
1984
1983
1984
1983
1984
1984
1984
1979
1984
1979
1984
1979
1984
1979
1981
1982
1984
1979
1981
1982
1984
1979
1981
1982
1984
1979
1981
1977
1985
1982
1984
1979
1981
1977
1985
1982
1986
1984
1979
1987
1981
1983.
1977
1985
1982
1986
1984
1979
1987
1981
1980
1977
1985
1982
1986
1976
1984
1979
1987
1981
1980
1977
1985
1982
1986
1976
1984
1979
1987
1981
1988
1980
1977
1985
1982
1986
1976
1984
1979
1987
1981
1983.
1973
1988
1980
1977
1985
1982
1986
1976
1979
1987
1981
1973
1988
1980
1977
1985
1982
1991
1986
1976
1979
1978
1987
1981
1983.
1973
1988
1980
1977
1985
1982
1991
1986
1976
1979
1978
1987
1981
1973
1988
1980
1977
1985
1982
1991
1986
1976
1979
1978
1987
1981
1983.
1973
1988
1980
1977
1985
1982
1991
1986
1976
1979
1978
1987
1981
1973
1988
1980
1977
1985
1982
1991
1986
1976
1979
1978
1987
1981
1983.
1973
1988
1980
1977
1985
1982
1991
1986
1976
1979
1978
1992
1987
1981
1973
1988
1980
1977