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

The line graph illustrates the production levels of fuel in the UK from 1981 to 2000. The unit of measurement used in energy is millions of tones.

Overall

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, natural gas shows an increasing trend of upward movement from the beginning of the

year

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to the end,

While

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the the other two, petroleum and coal show fluctuating movement from the start.

To begin

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with, in 1981 natural gas, started at around 40

million

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tonnes

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, but slowly increased to above 40

million

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tonnes

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in 1991 until it reached the peak of 100

tonnes

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million

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in 2000. Looking at the trend of petroleum, the starting point climbed to 140

million

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tonnes

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until 1986,

hence

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, in 1991 it declined to just under 100

million

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tonnes

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then

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went up again moderately to 140

million

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tonnes

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, remains to stabilize throughout the

year

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maintaining

to

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apply

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140

million

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tonnes

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.

On the other hand

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, coal, in 1981 started at 80

million

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tonnes

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decreased to 40

million

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tonnes

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in 1986,

then

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went up slightly to just under 60

million

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tonnes

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in 1986 until the

year

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1991,

then

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slowly going down to below 40

million

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tonnes

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at the end

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of the

year

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.