When did Aerosmith form?
1970
1968
1968
1968
1968
1967
1968
1967
1968
1967
1970
1968
1969
1967
1970
1968
1969
1971
1972
1967
1970
1968
1973
1969
1971
1972
1967
1970
1968
1973
1969
1971
1972
1967
1970
1968
1973
1969
1971
1975
1972
1967
1970
1968
1973
1969
1966
1971
1975
1972
1967
1970
1968
1973
1969
1966
1971
1975
1972
1965
1967
1970
1968
1973
1974
1969
1966
1971
1975
1972
1965
1967
1970
1968
1973
1974
1969
1966
1971
1975
1972
1965
1967
1970
1968
1973
1974
1969
1966
1971
1975
1972
1965
1967
1970
1968
1970s
1973
1974
1969
1966
1971
1975
1972
1965
1967
1970
1976
1968
1973
1974
1969
1970s
1960
1966
1964
1971
1975
1972
1965
1967
1970
1976
1968
1973
1974
1969
1960
1966
1964
1971
1970s
1975
1972
1965
1967
1970
1976
1968
1973
1974
1969
1960
1966
1964
1971
1975
1972
1965
1967
1970
1976
1970s
1973
1974
1969
1960
1966
1964
1971
1975
1972
1965
1967
1970
1976
1973
1974
1969
1963
1970s
1960
1966
1964
1971
1957
1975
1972
1965
1967
1970
1976
1973
1974
1969
1963
1960
1966
1955
1964
1961
1971
1970s
1957
1975
1972
1965
1967
1970
1976
1973