<Tr> <Td> Vietnam </Td> <Td> 10,117 </Td> <Td> </Td> <Td> 3,000 </Td> <Td> </Td> </Tr> <Tr> <Td> North Korea </Td> <Td> 5,059 </Td> <Td> </Td> <Td> 1,500 </Td> <Td> </Td> </Tr> <Tr> <Td> Romania </Td> <Td> 3,372 </Td> <Td> </Td> <Td> 1,000 </Td> <Td> </Td> </Tr> <Tr> <Td> Japan </Td> <Td> 2,023 </Td> <Td> </Td> <Td> 600 </Td> <Td> </Td> </Tr>

Where does silk come from how is it harvested