Y \ X
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
9220
9219
9218
9217
9216
9215
9214
9213
9212
9211
9210
9209
9208
9207
9206
9205
9204
9203
9202
9201
9200