Y \ X
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
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
11590
11589
11588
11587
11586
11585
11584
11583
11582
11581
11580
11579
11578
11577
11576
11575
11574
11573
11572
11571
11570