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
2700
2699
2698
2697
2696
2695
2694
2693
2692
2691
2690
2689
2688
2687
2686
2685
2684
2683
2682
2681
2680