<Tr> <Td> Coal </Td> <Td> 1,709 </Td> <Td> 41.5% </Td> </Tr> <Tr> <Td> Petroleum </Td> <Td> 30 </Td> <Td> 0.7% </Td> </Tr> <Tr> <Td> Natural Gas </Td> <Td> 1,066 </Td> <Td> 25.8% </Td> </Tr> <Tr> <Td> Nuclear </Td> <Td> 813 </Td> <Td> 19.7% </Td> </Tr>

The energy needs for the united states in the 1990s have