Kenya has proven deposits of oil in Turkana and the commercial viability was just discovered. Tullow Oil estimates Kenya's oil reserves to be around 10 billion barrels. Exploration is still continuing to determine if there are more reserves. Kenya currently imports all crude petroleum requirements. Kenya, east Africa's largest economy, has no strategic reserves and relies solely on oil marketers' 21-day oil reserves required under industry regulations. Petroleum accounts for 20% to 25% of the national import bill.