<Tr> <Td> 1921 </Td> <Td> 1339 </Td> <Td> </Td> <Td> 57,255 </Td> <Td> </Td> </Tr> <Tr> <Td> 1922 </Td> <Td> 1340 </Td> <Td> </Td> <Td> 56,319 </Td> <Td> </Td> </Tr> <Tr> <Td> 1950 </Td> <Td> 1369 </Td> <Td> </Td> <Td> 100,000 (approx .) </Td> <Td> </Td> </Tr> <Tr> <Td> 1950s </Td> <Td> </Td> <Td> </Td> <Td> 150,000 (approx .) </Td> <Td> </Td> </Tr>

What does the muslim duty of the hajj require