The pie charts provide information regarding the proportions of energy generated from six distinct resources in a particular nation from 1985 to 2003.
Overall, it is evident that most of the amount of energy was produced by oil, making up the highest share during the surveyed period. Other resources took up more moderate levels in comparison to that of oil, while the category of other renewable had the smallest percentage among all examined sectors.
In 1985, around 52% of the total amount of energy was released by oil, followed by the figure for nuclear, accounting for 22%. However, over the next 17 years, a significant downward trend could be observed in those categories, decreasing sharply by roughly 14% for both in 2003. In contrast, there were no considerable alterations in the hydro category, remaining stable at 4% between 1985 and 2003.
When it comes to other resources, they tended to undergo an upward trend. In 1985, the proportions of energy produced by the natural gas and coal made up comparable shares, at 13% and 8%, respectively, then increasing to approximately 23% for both eventually. In addition, a similar pattern was also exhibited in the other renewable sector. While commencing at the smallest point initially (1%), this figure experienced a slight growth in the year 2003, reaching 4% at the end of the period.