<Tr> <Td> Hungary </Td> <Td> 81 </Td> <Td> 25.1 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> ENI, end of 2015 </Td> <Td> 35 </Td> </Tr> <Tr> <Td> Mauritania </Td> <Td> 82 </Td> <Td> 20.0 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Bulgaria </Td> <Td> 83 / 85 </Td> <Td> 15.0 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr> <Tr> <Td> Czech Republic </Td> <Td> 83 / 85 </Td> <Td> 15.0 </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> <Td> </Td> </Tr>

Where is the largest oil deposit in the world