Each year BP collates information from around the globe for its annual Statistical Review. The last edition (2008) showed that 36% of the world's traded energy came from oil and 24% from natural gas (see graph below). Both oil and gas will reach a peak of production, and even the most optimistic studies say that this will be in the first 50 years of this century; the pessimistic put both peaks just one to two decades away. We can be certain that at least half of the world's current energy supply will go into decline in the near future, with a third (the oil) in a year or two. Haeba u etsa qeto ea ho nka matsatsi a phomolo nakong ea thupelo ea hau, ka kōpo re tsebise esale pele. Haeba u le phomolong ea beke ka Mantaha-Labohlano, re ke ke ra lefella litšenyehelo tsa thuto ea beke eo. Haeba u le hōle le moo u lulang teng, u ka 'na ua tlameha ho lefella litšenyehelo tse feletseng kapa tsa karolo e le hore u boloke kamore ea hau.