World Energy Usage 1983-2008 Almost all of the increase during the past 25 years has been from coal (gray) and natural gas (red).
The y-axis is millions of metric tons of oil equivalent. (One metric ton of oil is approximately 6.8 barrels.)
2008 worldwide consumption from all sources was about 11.3B metric tons of oil equivalent or approximately 210M barrels/day. The breakdown by energy source was 35% oil, 29% coal, 24% natural gas, 6% hydroelectric, and 5% nuclear. The US consumed 20% of the aggregate worldwide total.