<Tr> <Td> 20 . </Td> <Td> Shanghai Pudong International Airport </Td> <Td> Pudong, Shanghai </Td> <Td> China </Td> <Td> PVG / ZSPD </Td> <Td> 41,447,730 </Td> <Td> </Td> <Td> 2.1% </Td> </Tr> <Tr> <Td> 21 . </Td> <Td> San Francisco International Airport </Td> <Td> San Mateo County, California </Td> <Td> United States </Td> <Td> SFO / KSFO </Td> <Td> 40,927,786 </Td> <Td> </Td> <Td> 4.3% </Td> </Tr> <Tr> <Td> 22 . </Td> <Td> Phoenix Sky Harbor International Airport </Td> <Td> Phoenix, Arizona </Td> <Td> United States </Td> <Td> PHX / KPHX </Td> <Td> 40,591,948 </Td> <Td> </Td> <Td> 5.3% </Td> </Tr> <Tr> <Td> 23 . </Td> <Td> McCarran International Airport </Td> <Td> Las Vegas, Nevada </Td> <Td> United States </Td> <Td> LAS / KLAS </Td> <Td> 40,560,285 </Td> <Td> </Td> <Td> 2.0% </Td> </Tr>

Which are the biggest airports in the world