Moreover, economists contend that energy consumption per capita is declining, owing to more efficient use. Fuel efficiencies in the automotive sector have increased by more than 60% in the past three decades, while overall wealth produced per unit of energy has doubled during the same period.
再者，经济学家们认为由于使用效率的提升，人均能耗正在下降。在过去的30年中汽车产业的能效提升超过60%，而同期每单位能源所创造的全部财富则翻了一番。