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
15000
14999
14998
14997
14996
14995
14994
14993
14992
14991
14990
14989
14988
14987
14986
14985
14984
14983
14982
14981
14980