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
4170
4169
4168
4167
4166
4165
4164
4163
4162
4161
4160
4159
4158
4157
4156
4155
4154
4153
4152
4151
4150