<Tr> <Td> 15 </Td> <Td> Nebraska </Td> <Td> 12.3% </Td> <Td> 167 </Td> <Td> 10.0% </Td> <Td> 9.8% </Td> </Tr> <Tr> <Td> 16 </Td> <Td> Iowa </Td> <Td> 12.3% </Td> <Td> 368 </Td> <Td> 10.9% </Td> <Td> 8.6% </Td> </Tr> <Tr> <Td> 17 </Td> <Td> Delaware </Td> <Td> 13.0% </Td> <Td> 118 </Td> <Td> 12.4% </Td> <Td> 13.9% </Td> </Tr> <Tr> <Td> 18 </Td> <Td> Wisconsin </Td> <Td> 13.2% </Td> <Td> 737 </Td> <Td> 11.1% </Td> <Td> 10.8% </Td> </Tr>

Which region of the us has the highest poverty rate