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1960
to
1960
2
1961
to
1961
6
1962
to
1962
4
1963
to
1963
17
1964
to
1964
32
1965
to
1965
5
1966
to
1966
4
1967
to
1967
1
1968
to
1968
2
1969
to
1969
2
1970
to
1970
0
1971
to
1971
0
1972
to
1972
3
1973
to
1973
2