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
10290
10289
10288
10287
10286
10285
10284
10283
10282
10281
10280
10279
10278
10277
10276
10275
10274
10273
10272
10271
10270