The two pie charts illustrate the evolution of energy production sources in a specific country over two decades, from 1983 to 2003.
Overall, there were minor fluctuations in the proportions of various energy sources, with hydropower remaining the dominant source throughout the period while natural gas maintained a consistent share.
In 1983, hydropower was the principal energy source, accounting for 42% of total energy production. Oil followed, contributing to 23% of the energy, while nuclear power made up 20%. Coal represented 11%, and natural gas was the least utilized energy source at 4%. By 2003, hydropower’s share slightly decreased to 38%, while oil’s proportion increased marginally to 24%. Nuclear power experienced a slight increase to 21%, reflecting its growing role in energy production.
Coal’s contribution to the energy mix saw a notable increase from 11% in 1983 to 13% in 2003, indicating a rising utilization of this fossil fuel over the years. Meanwhile, natural gas’s share remained unchanged at 4%, suggesting a stagnation in its use during the period under review. This stability contrasts with other energy sources, highlighting distinct changes in the energy production landscape across two decades.