Tonga Imports from Australia of Petroleum Coke, Petroleum Bitumen, Other Residues of Petroleum Oils was US$37 during 2011, according to the United Nations COMTRADE database on international trade. Tonga Imports from Australia of Petroleum Coke, Petroleum Bitumen, Other Residues of Petroleum Oils - data, historical chart and statistics - was last updated on February of 2026.