In what year did the first NFL Super Bowl take place?
1967
1966
1966
1966
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1970
1960
1966
1967
1970
1960
1966
1967
1970
1960
1967
1970
1960
1967
1970
1960
1967
1970
1967
1967
1967
1967
1967
1967
1959
1967
1959
1967
1959
1971
1967
1958
1959
1971
1967
1958
1959
1926
1971
1967
1958
1959
1971
1967
1926
1969
1958
1927
1959
1971
1967
1969
1958
1926
1950
1966.
1957
1959
1968
1927
1971
1967
1969
1958
1950
1957
1959
1926
1968
1971
1967
1927
1946
1969
1958
1950
1957
1959
1968
1971
1966.
1946
1939
1969
1958
1950
1927
1957
1959
1968
1960.
1971
1922
1974
1946
1969
1958
1950
1957
1939
1959
1968
1971
1974
1946
1931
1969
1922
1958
1950
1957
1959
1968
1966.
1939
1971
1974
1946
1969
1958
1950
1957
1960.
1931
1959
1922
1968
1932
1971
1974
1946
1939
1969
1958
1950
1957
1933
1959
1968
1966.
1931
1971
1970.
1922
1974
1946
1932
1969
1958
1950
1957
1933
1959