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
11620
11619
11618
11617
11616
11615
11614
11613
11612
11611
11610
11609
11608
11607
11606
11605
11604
11603
11602
11601
11600