Iran, Iraq Rank in Top Five in Countries With the Biggest Oil Reserves

Ranking five countries with the biggest oil reserves as of Jan. 1, 2009.

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  1. Saudi Arabia 266.7 billion barrels
  2. Canada 178.1 billion barrels
  3. Iran 136.2 billion barrels
  4. Iraq 115 billion barrels
  5. Kuwait 104 billion barrels

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Source: Energy Information Administration