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Summarize The Changes Of Energy In The USA Between 1980 And 1980

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The charts show changes of different types of energy in the USA between 1980 and 1990.

Obviously, oil and natural gas made up the two biggest items in both years. Together they comprised over half of the total percentage. Oil accounted for 42% in 1980, but this dropped slightly to 33% in 1990. A similar trend can be found in natural gas, which decreased by 1% to 25% in 1990.

Other areas changed significantly. Coal contributed to 22% in 1980, following an obvious increase to 27% in 1990.

Hydroelectric power remained unchanged, both years showed the same percentage in this aspect. However, the proportion of nuclear doubled, climbing from 5% to 10%.

In conclusion, oil and natural gas are still the two most important forms of energy, while

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