Y \ X
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
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
10850
10849
10848
10847
10846
10845
10844
10843
10842
10841
10840
10839
10838
10837
10836
10835
10834
10833
10832
10831
10830