1949
1951
1951
1950
1950
1950
1951
1951
1952
1951
1951
1951
1951
1950
1967
1952
1964
1963
1965
1953
1953
1947
1950
1956
1955
1952
1952
1955
1974
1956
1955
1961
1951
1960
1962
1963
1969
1952
1953
1953
1952
1952
1952
1953
1967
1959
1962
1959
1960
1962
1961
1968
1958
1955
1963
1951
1960
1954
1953
1961
1959
1953
1965
1965
1968
1958
1962
1963
1962
1956
1964
1957
1949
1950
1957
1954
1956
1952
1963
1964
1957
1949
1963
1956
1974
1952
1959
1955
1959
1960
1973
1955
1976
1968
1960
1962
1954
1958
1967
1960
1964
1965
1968
1964
1952
Comments