The graph below shows the production levels of the main kinds of fuel in the UK between 1981 and 2000. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The line charts demonstrate the

manufacture

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manufacturing

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rate of three types of oil in the UK from 1981 to 2000.

Overall

, despite witnessing some fluctuations,

petroleum

was the most popular fuel throughout the period.

In addition

, natural

gas

overtook coal and became the second

most

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favorite

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favourite

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type of oil. In 1981,

petroleum

was produced the most with

the

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a

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figure

of around 90

energy

units

. Following that, about 80 million tonnes of coal were manufactured in the same year, twofold that

figure

of

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for

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natural

gas

(under 40

energy

units

). After increasing significantly to 140

energy

units

in 1984, the amount of

petroleum

being produced remained the same for 3 years, before dropping to 100

energy

units

in 1990. By 2000, the

figure

for

petroleum

's production rate had surged, ending the period at 140

energy

units

. Regarding the production of natural

gas

, after remaining unchanged for 7 years, from 1988, the

figure

for natural

gas

rose rapidly and reached a peak at over 100 million tonnes in 2000.

By contrast

, after fluctuating in the first 5 years, the

figure

for coal's production level experienced a decrease and became the least

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kind of fuel with merely 30

energy

units

was

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observed

at the end

of the period.