The two pie charts illustrate the percentages of energy production from different resources: oil, natural gas, coal, nuclear, hydro, and other renewable sources in a country over 18 years, in 1985 and 2003. Overall, the oil production share was the largest in both years. The figures for coal, natural gas, and other renewable showed an upward trend, whereas the production proportions of nuclear and oil energy experienced a fall to various degrees throughout the given period. In stark contrast, hydro energy remained unchanged in both given years.
In terms of increases, in 1985, the percentage of coal production accounted for 8%, and it was followed by a significant growth to 22%, almost a quarter of the entire energy production in 2003. Similarly, natural gas, along with other renewable energy sources, underwent a noticeable rise, with respective figures of 23% and 4% in 2003.
Regarding decreases, in 1985, oil production was responsible for over half of all energy production at 52%, after which the figure saw a considerable decrease to 39% in 2003, remaining the largest segment. Starting at 22%, nuclear energy production fell drastically to 8%, the largest drop among other energy productions. Hydro energy, on the other hand, remained unchanged at 4, the smallest percentage in both years.