 The Minister of Petroleum Resources Timibre Silva says the oil and gas sector accounts for about 10% of Nigeria's gross domestic product GDP. Silva added that crude oil exports represented about 86% of total export earnings, while the actual government revenue from the sector is 40%. The Minister said that this while delivering the graduation lecture of the National Defence College course 29, titled, Enhanced Digital Technology in the Oil and Gas Sector of Nigeria for National Development on Monday in Abuja. He said Nigeria was more than 200 million inhabitants, remained the most populous country within the organisation of petroleum-exporting countries, OPEC.