<Tr> <Td> Devon Mulry </Td> <Td> Graduate Manager </Td> <Td> </Td> </Tr> <Tr> <Td_colspan="4"> Reference: </Td> </Tr> <Table> <Tr> <Th> Year </Th> <Th> Coach </Th> <Th> Opponent </Th> <Th> Score </Th> <Th> Site </Th> <Th> Overall Record </Th> <Th> Big Ten Record </Th> </Tr> <Tr> <Td> 1989 </Td> <Td> Steve Fisher </Td> <Td> Seton Hall </Td> <Td> 80--79 (OT) </Td> <Td> Seattle </Td> <Td> 30--7 </Td> <Td> 12--6 </Td> </Tr> <Tr> <Td_colspan="6"> National Championships </Td> <Td_colspan="1"> </Td> </Tr> </Table> <Tr> <Th> Year </Th> <Th> Coach </Th> <Th> Opponent </Th> <Th> Score </Th> <Th> Site </Th> <Th> Overall Record </Th> <Th> Big Ten Record </Th> </Tr>

When did michigan basketball last win the national championship