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
15020
15019
15018
15017
15016
15015
15014
15013
15012
15011
15010
15009
15008
15007
15006
15005
15004
15003
15002
15001
15000