Table:
text: County Borough of Rochdale
Election results 1933–1972
Election results 1933–1972
Election Liberal_Party Conservative_Party Labour_Party Independents Control
1968 19 (+1) 18 (+3) 11 (-3) 0 (-1) No overall control
1969 20 (+1) 21 (+3) 7 (-4) 0 No overall control
1970 15 (-2) 19 (-4) 12 (+6) 1 No overall control (1 vacancy)
1971 11 (-2) 14 (-5) 22 (+7) 1 No overall control
1972 9 (-4) 11 (-1) 28 (+6) 0 (-1) Labour gain from no overall control

Question: Who was in control the year Labor won 12 (+6) seats in the County Borough of Rochdale?