1981
1981
1980
1980
1984
1984
1981
1955
1982
1980
1981
1985
1981
1985
1985
1984
1983
1982
1982
1984
1984
1985
1985
1984
1984
1984
1984
1980
1980
1979
1987
1988
1986
1987
1995
1979
1992
1979
1957
1956
1957
1998
1979
1961
1972
1997
1991
1955
1976
1985
1986
1987
1992
1997
1987
1987
1999
1982
1983
1970
1978
1967
1960
1975
1954
1958
1959
1955
1970
1954
1964
1968
1961
1957
1968
1970
1975
1976
1975
1969
1958
1952
1965
1969
1972
1975
1959
1961
1983
1982
1970
1969
1985
1970
1982
1983
1982
1982
1982
1982
1969
1969
1970
1965
1980
1975
1966
1958
1973
1970
1970
1970
1969
1969
1954
1956
1977
1977
1977
1977
1971
1974
1978
1978
1979
1978
1978
1978
1978
1979
1974
1974
1975
1976
1973
1971
1971
1973
1972
1976
1973
1972
1972
1976
1976
1973
1978
1986
1978
1999
1992
1977
1987
1962
1979
1983
1965
1953
1987
1992
1986
1987
1964
1986
1988
1985
1986
1993
1973
1952
1972
1964
1974
1973
1968
1971
1968
1959
1961
1957
1958
1960
1958
1958
1962
1966
1961
1963
1960
1961
1960
1960
1953
1983
1954
1956
1953
1956
1957
1962
1953
1954
1968
1967
1965
1967
1967
1966
1967
1966
1971
1971
1968
1967
1968
1968
1971
1964
1963
1962
1963
1962
1963
1965
1965
1964
1963
1964
1963
1963
Comments