The pie charts break down the major sources of energy (oil, natural gas, coal, hydroelectric power, and nuclear power) in the United States between 1980 and 1990.
Overall, the five different energy sources in the United States showed significant differences over the ten-year period. In detail, Oil consumption, which was the largest energy source, decreased significantly by 9%, from 42% in 1980 to 33% in 1990. Output from natural gas indicated a minor reduction by 1%, from 26% to 25% over the same period.
Conversely, the use of Coal increased slightly by 5%, from 22% in 1980 to 27% in 1990. Similarly, nuclear power consumption depicted a marginal rise by 5%, from 5% to 10% over ten years. Notably, the output from hydroelectric power remained relatively stable, at 5% in both years, which was the smallest number record throughout the period.
In summary, energy sources in the United States exhibited various changes over the ten-year period. While nuclear power and coal experienced modest increases, oil and natural gas marked a downward trend, but remained the highest proportions among other categories.