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
6310
6309
6308
6307
6306
6305
6304
6303
6302
6301
6300
6299
6298
6297
6296
6295
6294
6293
6292
6291
6290