Y \ X
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
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
4290
4289
4288
4287
4286
4285
4284
4283
4282
4281
4280
4279
4278
4277
4276
4275
4274
4273
4272
4271
4270