Line graph shows the production levels of the main fuels in the UK between 1981 and 2000.

The line graph depicts the

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levels of three primary energy sources—petroleum, coal, and natural gas—in the United Kingdom across a span of 19 years, from 1981 to 2000. In general, petroleum production remained dominant during the entire timeframe, showing a predominantly rising pattern.

Conversely

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, coal

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underwent a marked drop,

whereas

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natural gas generation steadily climbed. At the beginning of the period, petroleum and coal initiated at nearly 85 and 80

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respectively,

while

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natural gas was considerably lower, at roughly 35

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. Petroleum

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surged rapidly, hitting a peak of approximately 140

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in the late 1980s, and persisted at a consistently elevated level, concluding near 150

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by 2000. Coal,

in contrast

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, plunged notably during the mid-1980s, rebounded briefly, but

then

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decreased progressively, ending below 40

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. Natural gas

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increased gradually and reliably throughout the duration, attaining its maximum point of nearly 100

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by the final year.