What countries make up 80% of the world oil?

Answer:
The top producers are
Saudi Arabia
Russia
US
Iran
Mexico
However the top exporters are not the same countries. See for details
http://www.infoplease.com/ipa/a0922041.h...

Its Saudi Arabia, Iraq, Iran these are the main countries as far as I know.

To get the better details, search for OPEC and you will get the required details.

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