<Tr> <Td> Mauritania </Td> <Td> 23,800 </Td> <Td> 0 </Td> </Tr> <Tr> <Td> Mexico </Td> <Td> 3,400 </Td> <Td> 49 </Td> </Tr> <Tr> <Td> Mongolia </Td> <Td> 141,500 </Td> <Td> 535 </Td> </Tr> <Tr> <Td> Namibia </Td> <Td> 463,000 </Td> <Td> 120,418 </Td> </Tr>

Who has the most uranium in the world