Botswana Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Namibia was US$11 during 2023, according to the United Nations COMTRADE database on international trade. Botswana Exports of coke, semi-coke of coal, of lignite, of peat; retort carbon to Namibia - data, historical chart and statistics - was last updated on May of 2024.