<Tr> <Td> 1941 </Td> <Td> 917,939 </Td> <Td> </Td> <Td> 44.3% </Td> </Tr> <Tr> <Td> 1951 </Td> <Td> 1,744,072 </Td> <Td> </Td> <Td> 90.0% </Td> </Tr> <Tr> <Td> 1961 </Td> <Td> 2,658,612 </Td> <Td> </Td> <Td> 52.4% </Td> </Tr> <Tr> <Td> 1971 </Td> <Td> 4,065,698 </Td> <Td> </Td> <Td> 52.9% </Td> </Tr>

What do you understand by national capital territory