Y \ X
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
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
4270
4269
4268
4267
4266
4265
4264
4263
4262
4261
4260
4259
4258
4257
4256
4255
4254
4253
4252
4251
4250