The pie charts illustrate the proportion of energy produced from different sources in a specific country in 1985 and 2003.
Overall, there was a significant shift in the country’s energy production, with a decrease in the dominance of oil and nuclear energy, while natural gas, coal, and renewable sources became more prominent contributors. The proportion of hydrogen remained constant throughout the period.
In 1985, oil was the primary energy source, comprising 52% of total production. Despite a notable decline to 39% in 2003, it remained the largest single source of energy. Nuclear energy also experienced a reduction, from 22% in 1985 to 17% in 2003, ranking as the third largest source after oil and natural gas. Hydrogen remained unchanged at 4% across both years.
In contrast, natural gas and coal saw substantial increases. Natural gas usage grew by 10 percentage points, from 13% in 1985 to 23% in 2003, making it the second-largest energy source by the end of the period. Similarly, coal rose by 5 percentage points, from 8% to 13%. The contribution of renewable energy sources, while still relatively small, expanded significantly, rising from 1% in 1985 to 4% in 2003, reflecting a growing emphasis on more sustainable energy options.
This shift highlights a diversification in the country’s energy production over the 18-year period, with a reduced reliance on traditional energy sources like oil and nuclear power, and a greater emphasis on natural gas, coal, and renewable energy sources.