<Tr> <Td> 1978 </Td> <Td> 4,304,105,753 </Td> <Td> </Td> <Td> 4,295,664,825 </Td> <Td> 4,286,317,000 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> 1979 </Td> <Td> 4,379,013,942 </Td> <Td> </Td> <Td> 4,371,527,871 </Td> <Td> 4,363,144,000 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> 1980 </Td> <Td> 4,451,362,735 </Td> <Td> </Td> <Td> 4,449,048,798 </Td> <Td> 4,439,529,000 </Td> <Td> 4,461,000,000 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> 1981 </Td> <Td> 4,534,410,125 </Td> <Td> </Td> <Td> 4,528,234,634 </Td> <Td> 4,514,838,000 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr>

What was the population of the world during ww1