When did AC/DC start?
1973
1965
1965
1965
1967
1965
1967
1968
1964
1965
1967
1969
1968
1964
1965
1967
1969
1968
1964
1965
1967
1969
1968
1964
1965
1970
1967
1969
1968
1964
1965
1975
1970
1973
1971
1967
1969
1968
1964
1965
1975
1970
1973
1971
1967
1969
1968
1964
1965
1975
1970
1963
1973
1971
1967
1966
1969
1968
1964
1965
1975
1972
1970
1963
1973
1971
1967
1960
1966
1969
1968
1962
1964
1965
1975
1972
1970
1963
1973
1971
1967
1960
1966
1969
1968
1962
1964
1965
1975
1972
1970
1963
1973
1971
1967
1960
1966
1969
1968
1962
1964
1965
1975
1972
1970
1963
1973
1971
1967
1960
1966
1969
1968
1962
1964
1974
1965
1975
1972
1970
1963
1973
1971
1967
1960
1966
1969
1968
1962
1964
1974
1965
1975
1972
1970
1957
1963
1973
1970s
1971
1967
1960
1966
1969
1968
1962
1964
1958
1974
1965
1975
1955
1961
1972
1970
1957
1963
1973
1971
1967
1960
1966
1970s
1969
1968
1962
1964
1958
1974
1965
1975
1955
1961
1972
1970
1957
1963
1973
1971
1967
1960
1966
1969
1968
1962
1960s
1964
1958
1974
1965
1975
1970s
1955
1970
1960
1970s
69
1960s
77
69
1970s