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
14710
14709
14708
14707
14706
14705
14704
14703
14702
14701
14700
14699
14698
14697
14696
14695
14694
14693
14692
14691
14690