<Tr> <Td> Grand total </Td> <Td> 295,959 </Td> <Td> 158,880 </Td> <Td> 73,711 </Td> <Td> 3,714 </Td> <Td> 38,811 </Td> <Td> 14,717 </Td> <Td> 6,126 </Td> </Tr> <Tr> <Td> Combat aircraft </Td> <Td> 200,443 </Td> <Td> 99,487 </Td> <Td> 56,695 </Td> <Td> 8 </Td> <Td> 27,152 </Td> <Td> 13,929 </Td> <Td> 3,172 </Td> </Tr> <Tr> <Td> Very heavy bombers </Td> <Td> 3,740 </Td> <Td> 3,740 </Td> <Td>--</Td> <Td>--</Td> <Td>--</Td> <Td>--</Td> <Td>--</Td> </Tr> <Tr> <Td> Heavy bombers </Td> <Td> 31,685 </Td> <Td> 27,867 </Td> <Td> 1,683 </Td> <Td>--</Td> <Td> 2,135 </Td> <Td>--</Td> <Td>--</Td> </Tr>

How did the aviation industry adopt line production during world war ii