The pie charts illustrate the differences among five types of energy resources that were consumed by American citizens during a decade starting from 1980.
Overall, it is obvious that the main source of energy was oil in both mentioned years. While the least were hydroelectric and nuclear power, only one of them changed significantly and the other kept its rate.
Looking at the details, the most used energy by residents in the USA was oil, at 42% in 1980. However, it declined by 10% and reached 33% by the second mentioned year. Although coal usage was 22% at first, then people in the United States lost their interest in consuming it. It is worthy to be mentioned that natural gas experienced a slight decrease just by 1% from 1980 to 1990. Even though the percentage of using nuclear power became doubled during the mentioned period and it reached from 5% to 10%, hydroelectric power’s rate remained stable from 1980 until 1990.