The pie charts compare the proportion of energy produced by 6 different kinds of sources in a country from 1985 to 2003.
Overall, it is clear that oil and nuclear fell marginally over the period, while natural gas, coal, and other renewable saw significant growth at the end of the period.
In 1985 the most wide-spread energy source was oil with 52%, which was followed by nuclear and natural gas. While nuclear accounted for 22% of the total energy production, natural gas generated 13%. Coal, hydro, and other renewable accounted for a total about 13% of the total energy.
In 2003, there was an increase of about 17% in coal, hydro, and other renewable. In contrast oil declined sharply from 52% to 39% by the end of the period. Regarding nuclear fell significantly from 22% to 8%, while Natural gas increased steadily from 8% to 22%
