<Tr> <Td> 32 </Td> <Td> </Td> <Td> Bock, Rolf! Rolf Bock </Td> <Td> 11 May 1981 </Td> <Td> 30 June 1981 </Td> <Td> </Td> </Tr> <Tr> <Td> 33 </Td> <Td> </Td> <Td> Zebec, Branko! Branko Zebec </Td> <Td> 1 July 1981 </Td> <Td> 30 June 1982 </Td> <Td> </Td> </Tr> <Tr> <Td> 34 </Td> <Td> </Td> <Td> Feldkamp, Karl - Heinz! Karl - Heinz Feldkamp </Td> <Td> 1 July 1982 </Td> <Td> 5 April 1983 </Td> <Td> </Td> </Tr> <Tr> <Td> 35 </Td> <Td> </Td> <Td> Witte, Helmut! Helmut Witte </Td> <Td> 6 April 1983 </Td> <Td> 30 June 1983 </Td> <Td> </Td> </Tr>

When was the last time dortmund won the league