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
12570
12569
12568
12567
12566
12565
12564
12563
12562
12561
12560
12559
12558
12557
12556
12555
12554
12553
12552
12551
12550