The pie chart provided gives information about the percentage change in the power harnessed from various resoures in a given country from 1985 to 2003.
Overall, the largest percentage of energy was generated from oil and the least resource of energy production was from other uncategorised sources im both 1985 and 2003.
Firstly, in 1985, oil sources generated 52% of energy followed by nuclear which produced 22% of energy. Natural gas, coal, hydra and other resources made 13%, 8%, 4% and 1% of energy respectively.
However, in 2003, production of energy from oil was still the leading source with 39% closely followed closely by natural gas and coal having a very close margin which accounted for 23% and 22% of energy respectively. Nuclear accounted for 8% of energy while hydro and natural gas made up the least percentage of energy production producing 4% each of energy.
