The pie charts illustrate changes in the proportions of energy production in a particular country between 1983 and 2003.
Overall, oil remained the dominant energy source despite a slight decline, while nuclear and hydropower increased significantly. In contrast, coal’s share decreased, and natural gas remained unchanged.
In 1983, oil accounted for the largest proportion at 42%, followed by coal at 23%. Hydropower made up 20%, while nuclear energy contributed 11% and natural gas just 4%. By 2003, oil’s share had fallen modestly to 38%. Coal experienced a more substantial drop to 13%, whereas natural gas stayed constant at 4%.
By comparison, nuclear energy almost doubled to 21%, and hydropower rose to 24%, becoming the second-largest energy source. These changes indicate a gradual shift in the energy mix over the two decades.
