The two pie charts illustrate the shifts in the percentage of energy generated from six distinct sources in a specific country between 1985 and 2003.
Overall, it is evident that oil was the dominant energy source in both years, although its share fell considerably. Conversely, coal and natural gas became increasingly important, while nuclear energy production dropped significantly.
In 1985, oil accounted for more than half of the total energy production at 52%. Nuclear power was the second most significant source, contributing 22%, followed by natural gas at 13% and coal at 8%. Hydro and other renewables made up the remaining 5% combined. By 2003, the proportion of oil had decreased to 39%, though it remained the leading source.
In contrast, coal production saw a dramatic rise, jumping from 8% to 22%, matching the share of natural gas, which also grew from 13% to 23%. Meanwhile, the contribution of nuclear power plummeted from 22% in 1985 to just 8% in 2003. Hydro remained stable at 4%, while the share of other renewables increased fourfold to reach 4% by the end of the period.