The pie charts indicate changes in the proportions of energy produced in the US from 1983 to 2003. Summarize the information by selecting and reporting the main features, and make comparisons where relevant.

These pie charts illustrate various fuels that could produce electricity in the USA over 20 years.

Overall

,

while

most of the fossil fuels witnessed a downward trend except coal, the opposite could be seen in renewable

energy

. Noticeably, hydropower was the less favourable choice. In traditional

energy

, accounting for 42%, the percentage of

energy

generated by oil was the highest in 1983, followed by coal and natural gas with 23% and 11% respectively.

This

figure decreased moderately by 3% for 2 decades which was the most used

energy

in 2003.

Similarly

, the growth from 11% to 21%, witnessed by natural gas, made it become the second most used traditional

energy

.

In contrast

, a decrease of 10% was seen in coal from 1983 and 2003.

On the other hand

, in 1983, among renewable

energy

,

while

hydropower only consisted of 4% of ways to generate electricity, which was the lowest, the other

energy

, nuclear power, grew by 4% in the

last

observed period. Strikingly, hydropower remained stable at 4% over 20 years.