| colspan=3 style="text-align: left; font-size: 0.85em; background-color: #f2f2f2;" |'''Source''': [[BP]]-Statistical Review of World Energy, 2016 | | colspan=3 style="text-align: left; font-size: 0.85em; background-color: #f2f2f2;" |'''Source''': [[BP]]-Statistical Review of World Energy, 2016 |