1968
1978
1973
1978
1961
1976
1974
1989
1959
1990
1971
1973
1986
1966
1973
1985
1988
1984
1975
1962
1973
1982
1977
1986
1980
1971
1989
1973
1976
1976
1980
1975
1959
1980
1976
1987
1973
1973
1973
1984
1976
1966
1977
1966
1966
1972
1982
1965
1965
1977
1965
1968
1971
1966
1968
1967
1982
1985
1968
1969
1969
1955
1964
1966
1972
1971
1965
1967
1984
1966
1975
1966
1978
1959
1967
1973
1964
1975
1968
1970
1982
1966
1967
1979
1973
1975
1976
1968
1975
1979
1965
1955
1955
1955
1971
1964
1968
1970
1984
1977
1966
1975
1977
1966
1966