Explanation:

* Qatar had decided to withdraw its membership from Organisation of the Petroleum Exporting Countries (OPEC) effective from January 2019. * Qatar left OPEC on 1 January 2019, after joining the organization in 1961, to focus on natural gas production, of which it is the world's largest exporter in the form of liquified natural gas (LNG). Note: * As of January 2019, OPEC has 14member countries: Algeria, Angola, Congo, Ecuador, Equatorial Guinea, Gabon, Iran, Iraq, Kuwait, Libya, Nigeria, Saudi Arabia, UAE and Venezuela.