<Tr> <Th> </Th> <Td> United States </Td> <Td> 307 </Td> <Td> 300 </Td> <Td> 320 </Td> <Td> 336 </Td> <Td> 346 </Td> <Td> 8.6% </Td> <Td> 387 </Td> </Tr> <Tr> <Th> </Th> <Td> Iran </Td> <Td> 205 </Td> <Td> 214 </Td> <Td> 206 </Td> <Td> 227 </Td> <Td> 215 </Td> <Td> 5.4% </Td> <Td> 186 </Td> </Tr> <Tr> <Th> 5 </Th> <Td> China </Td> <Td> 183 </Td> <Td> 190 </Td> <Td> 194 </Td> <Td> 200 </Td> <Td> 203 </Td> <Td> 5.1% </Td> <Td> 206 </Td> </Tr> <Tr> <Th> 6 </Th> <Td> Canada </Td> <Td> 143 </Td> <Td> 155 </Td> <Td> 152 </Td> <Td> 159 </Td> <Td> 169 </Td> <Td> 4.2% </Td> <Td> 182 </Td> </Tr>

Where does most of the world's energy production come from