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
10810
10809
10808
10807
10806
10805
10804
10803
10802
10801
10800
10799
10798
10797
10796
10795
10794
10793
10792
10791
10790