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The image presents a graph of fossil fuel energy generation in Europe from 1981 to 2001, featuring numerical data points for petroleum, coal, and natural gas across four years; in 1981, petroleum generated 40 units, coal 35 units, and natural gas 10 units; in 1986, petroleum remained at 40 units, coal at 30 units, and natural gas increased to 15 units; by 1991, petroleum rose to 45 units, coal decreased to 24 units, and natural gas grew to 22 units; in 1996, petroleum increased to 47 units, coal further declined to 20 units, and natural gas surpassed coal at 26 units; in 2001, petroleum peaked at 50 units, coal reduced to 19 units, and natural gas maintained a growth to 30 units.
Given the complexity of the image, the above description may not be entirely accurate.
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The graph illustrates the amount of energy generated from three fossil fuels—petroleum, coal, and natural gas—in Europe between 1981 and 2001, measured in trillion units.
Overall, petroleum remained the dominant source of energy throughout the period, while energy from coal declined steadily. Natural gas, on the other hand, experienced a sharp and consistent increase.
In 1981, petroleum accounted for 35 trillion units of energy production. This figure rose gradually to 40 trillion in 1986 and reached 50 trillion units by 2001, showing a steady upward trend.
Coal began at 30 trillion units in 1981 but underwent a continuous decline, falling to 17 trillion units by 2001.
Natural gas saw the most dramatic growth. Starting at only 8 trillion units in 1981, it increased to 20 trillion by 1991, nearly matching coal. It continued rising and peaked at 33 trillion units in 2001, more than quadrupling its original level.
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