The pie charts illustrate the energy generation from six types of resources in one particular country in 1985 and 2003.
Overall, the percentage of energy produced by oil and nuclear plants decreased considerably, whereas the figures for coal, natural gas and other renewables increased over the eight-year period. Notably, the proportion of energy generated by coal experienced the most significant growth, while the oil was the resource produced the most energy.
The figures for energy generated by oil and nuclear accounted for 52% and 22%, respectively, in 1985. Although the former decreased considerably to 39%, it remained the most produced energy and the latter declined to 8% in 2003. The figure for hydro, meanwhile, stood unchanged in both years, with accounting for 4%.By contrast, the percentages of energy which were produced by natural gas and coal rose considerably between 1985 and 2003, with the figure for natural gas increasing from 13% to 23% and the figure for coal soaring from 8% to 22%. The proportion of energy generated by other renewable increased negligibly from 1% to 4% throughout the period.
