1960
1967
1968
1968
1972
1979
1970
1973
1976
1979
1980
1978
1981
82,83
1983
1983
1983
1984
1984
1985
1983
1985
1985
1985
1961
1963
1965
1966
1967
1967
1968
1968
1968
1968
1968
1968
1968
1969
1970
1970
1970
1970
1968
1968
1971
1972
1972
1976
1977
1978
1970
1970
1970
1971
1971
1972
1974
1974
1975
1975
1975
1976
1977
1978
1978
1978
1979
1979
1979
1979
1979
1980
1980
1980
1980
1980
1980
1981
1981
1981
1980
1981
1982
1981
1982
1982
1982
1982
1982
1982
1982
1983
1983
1983
1983
1983
1983
1983
1983
1983
1983
84,85
1984
1984
1984
1985
1984
1984
1984
1984
1984
1984
1984
1984
1984
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985
1985