Vitol Group, one of the world's biggest marketers and distributors of crude oil and petroleum products, said Monday a growth in trade volumes and increased average oil prices boosted its annual revenue by 36% in 2010, to $195 billion.

The privately-held company's total traded volumes in 2010 rose 25% on year to around 394 million metric tons, with higher crude oil, electricity and natural gas volumes accounting for most of the increase.

"Despite some lingering uncertainty, the global economic outlook is strong and can be expected to underpin strong growth in energy demand, particularly in the fast growing economies of Asia, the Middle East and South America," said Ian Taylor, president and chief executive of the Vitol Group.

In recent months Vitol has added to its downstream assets, including the purchase, with Helios Investment Partners, of 80% of Royal Dutch Shell PLC's (RDSA) fuels and lubricants assets in 14 African countries.