In the United States:

Americans constitute 5% of the world's population but consume 24% of the world's energy.

On average, one American consumes as much energy as
  • 2 Japanese
  • 6 Mexicans
  • 13 Chinese
  • 31 Indians
  • 128 Bangladeshis
  • 307 Tanzanians
  • 370 Ethiopians

If undeveloped countries consumed at the same rate as the US, four complete planets the size of the Earth would be required.