Here are pictures from every year of Bel Air production. Some are pictures of Impalas, but the styling is pretty much the same.
1952
1953
1954
1955
1956
1957
1958
1959
1960
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975