<Tr> <Th> 1921 </Th> <Td> 212,258 </Td> <Td> + 0.3% </Td> </Tr> <Tr> <Th> 1931 </Th> <Td> 241,621 </Td> <Td> + 13.8% </Td> </Tr> <Tr> <Th> 1948 </Th> <Td> 305,991 </Td> <Td> + 26.6% </Td> </Tr> <Tr> <Th> 1957 </Th> <Td> 319,620 </Td> <Td> + 4.5% </Td> </Tr>

Malta is located in which of the following series