The two given pie charts depict the information on the percentages of energy generated from five sources in a particular country between 1983 and 2003.
Overall, it is apparent from the charts that oil was the most popular source of energy despite a slight fall, while hydropower was the least-produced source of energy in both years.
To begin with, in 1983, oil and coal were used to produce 42% and 23% of the total energy, respectively. Over the next 20 years, the proportion of energy produced from oil saw a slight decline by 4%, while energy from coal also decreased by 10%.
In contrast, it is noticeable that the production of natural gas over the given time increased significantly from just 11% to 21%, and nuclear power also experienced a rise from 20% to 24% during the same period. On the other hand, hydropower was responsible for only 4% of the energy produced in both years.
