The pie charts show the percentage of energy production from different sources in a country in the years 2000 and 2010.
In 2000, coal produced the highest amount of energy at 30%. Gas was the second largest source with 25%. Nuclear energy contributed 20% of the total energy production. Renewable energy made up 15%, while oil had the lowest share at 10%.
By 2010, coal increased to 35% and remained the largest source of energy. Gas also increased to 30%. However, nuclear energy decreased significantly to 10%. Renewable energy increased to 20%, showing a growth in cleaner energy sources. Oil decreased to only 5%, becoming the smallest contributor.
Overall, coal and gas became more important sources of energy between 2000 and 2010, while nuclear and oil decreased. Renewable energy showed an increase during this period.
