No 4 Algeria
GDP: $206.085 billion
Algeria, full name the People's Democratic Republic of Algeria, whose capital is Algiers. Algeria has the 10th-largest reserves of natural gas in the world and is the sixth-largest gas exporter.
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 A couple of people visit to a building in Algiers, capital of Algeria, May 2, 2010. [Photo / dfic.cn]  | 
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