<Tr> <Td> 7 </Td> <Td> </Td> <Td> Arizona </Td> <Td> 4.9% </Td> <Td> 0.0 </Td> </Tr> <Tr> <Td> 8 </Td> <Td> 5 </Td> <Td> Nevada </Td> <Td> 4.9% </Td> <Td> 0.0 </Td> </Tr> <Tr> <Td> 9 </Td> <Td> 6 </Td> <Td> Pennsylvania </Td> <Td> 4.8% </Td> <Td> 0.0 </Td> </Tr> <Tr> <Td> 10 </Td> <Td> 7 </Td> <Td> Washington </Td> <Td> 4.8% </Td> <Td> 0.1 </Td> </Tr>

Who has the lowest unemployment rate in the united states