Y \ X
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
9080
9079
9078
9077
9076
9075
9074
9073
9072
9071
9070
9069
9068
9067
9066
9065
9064
9063
9062
9061
9060