1976
1976
1975
1976
1975
1974
1974
1976
1977
1978
1978
1978
1977
1977
1977
1986
1973
1972
1971
1971
1971
1977
1973
1973
1973
1974
1972
1976
1972
1973
1972
1978
1982
1982
1982
1981
1980
1982
1983
1984
1984
1985
1990
1985
1977
1978
1978
1979
1979
1980
1979
1979
1980
1977
1969
1970
1974
1995
1973
1978
1970
1988
1978
1977
2007
1971
1986
1979
1980
1972
1971
1975
1994
1974
1993
1983
1971
1974
1972
1981
1984
1976
1981
1989
1972
1961
1975
1979
1977
1978
1978
1980
1977
1978
1968
1968
1980
1967
1973
1957
1976
1978
1990
1979
1971
1974
1975
1986
1977
1957
1981
1971
Comments