The pie charts show the percentages of energy produced from six different sources in a country in 1985 and 2003.
Overall, oil was the main source of energy in both years, but its percentage decreased. In contrast, natural gas and coal became more popular, while hydrogen remained unchanged.
In 1985, oil made up 52% of energy production, making it the largest source. Nuclear energy was the second-largest source, at 22%, followed by natural gas at 13%. Coal accounted for 8%, while hydrogen represented 4%. Other renewable sources had the smallest share, at just 1%.
In 2003, the percentage of oil had dropped to 39%, although it remained the main energy source. Natural gas increased significantly from 13% to 23%. Similarly, coal rose from 8% to 13%. However, nuclear energy fell from 22% to 17%. Hydrogen stayed the same at 4%, while other renewable sources increased slightly from 1% to 4%. Overall, the figures show some changes in the country’s energy production over the period.