In what year did the Associated Press start declaring winners of the NCAA Division I Football National Championship with a poll?
1936
1950
1950
1950
1950
1950
1950
1950
1950
1950
1950
1936
1950
1936
1935
1950
1936
1935
1950
1936
1935
1950
1936
1935
1950
1936
1935
1950
1936
1935
1950
1936
1935
1950
1936
1935
1950
1936
1935
1950
1933
1936
1935
1940
1933
1936
1935
1967
1940
1933
1936
1949
1969
1935
1968
1937
1967
1940
1993
1933
1936
1949
1969
1935
1968
1937
1967
1940
1993
1933
1936
1949
1969
1935
1968
1937
1967
1940
1993
1933
1936
1949
1991
1969
1935
1968
1937
1967
1940
1993
1933
1936
1949
1991
1969
1935
1968
1937
1967
1952
1940
1993
1933
1936
1949
1991
1969
1951
1935
1968
1937
1967
1960
1952
1940
1993
1933
1936
1949
1991
1969
1951
1935
1968
1937
1967
1960
1952
1940
1993
1933
1936
1949
1991
1969
1951
1935
1968
1937
1967
1960
1952
1940
1993
1933
1949
1991
1969
1951
1935
1968
1937
1967
1960
1952
1940
1993
1933
1949
1991
1969
1951
1968
1937
1992
1967
1960
1948
1952
1940
1993
1958
1933
1949
1991
1969
1951
1968
1937
1992
1967
1960
1948
1952
1940
1993
1958
1933
1975
1934
1949
1991
1969
1951
1968
1937
1992
1967
1960
1940
1950.