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
12780
12779
12778
12777
12776
12775
12774
12773
12772
12771
12770
12769
12768
12767
12766
12765
12764
12763
12762
12761
12760