<Dd> 1 Elected in 1981 as "Anti H - Block / Proxy Political Prisoner"; formally began describing himself as a Sinn Féin MP in 1982 . </Dd> <Dd> 2 Unseated on petition . </Dd> <Table> <Tr> <Th> Constituency </Th> <Th> 1955 </Th> <Th> 56 </Th> <Th> 1982 </Th> <Th> </Th> <Th> </Th> <Th> </Th> <Th> 2001 </Th> <Th> 2005 </Th> <Th> 11 </Th> <Th> 13 </Th> <Th> 2015 </Th> <Th> 2017 </Th> </Tr> <Tr> <Td> Fermanagh and South Tyrone </Td> <Td> Clarke </Td> <Td> </Td> <Td> Carron </Td> <Td_colspan="3"> </Td> <Td_colspan="4"> Gildernew </Td> <Td> </Td> <Td> Gildernew </Td> </Tr> <Tr> <Td> Mid Ulster </Td> <Td> Mitchell </Td> <Td_colspan="4"> </Td> <Td_colspan="4"> McGuinness </Td> <Td_colspan="3"> Molloy </Td> </Tr> <Tr> <Td> Belfast West </Td> <Td_colspan="3"> </Td> <Td> Adams </Td> <Td> </Td> <Td_colspan="3"> Adams </Td> <Td_colspan="4"> Maskey </Td> </Tr> <Tr> <Td> West Tyrone </Td> <Td_colspan="6"> </Td> <Td_colspan="5"> Doherty </Td> <Td> McElduff </Td> </Tr> <Tr> <Td> Newry and Armagh </Td> <Td_colspan="7"> </Td> <Td_colspan="3"> Murphy </Td> <Td_colspan="2"> Brady </Td> </Tr> <Tr> <Td> Down South </Td> <Td_colspan="11"> </Td> <Td> Hazzard </Td> </Tr> <Tr> <Td> Foyle </Td> <Td_colspan="11"> </Td> <Td> McCallion </Td> </Tr> <Tr> <Th> No. of Sinn Féin MPs </Th> <Th> </Th> <Th> 0 </Th> <Th> </Th> <Th> </Th> <Th> 0 </Th> <Th> </Th> <Th> </Th> <Th> 5 </Th> <Th> 5 </Th> <Th> 5 </Th> <Th> </Th> <Th> 7 </Th> </Tr> </Table> <Tr> <Th> Constituency </Th> <Th> 1955 </Th> <Th> 56 </Th> <Th> 1982 </Th> <Th> </Th> <Th> </Th> <Th> </Th> <Th> 2001 </Th> <Th> 2005 </Th> <Th> 11 </Th> <Th> 13 </Th> <Th> 2015 </Th> <Th> 2017 </Th> </Tr>

How many sinn fein mps in northern ireland