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 given line chart demonstrates the creation degrees of the primary types of fuel in the UK from 1981 to 2000.

Overall

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,

according to

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the data,

it is clear that

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,

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the figure for Petroleum was recorded at the highest among all three fuels. Meanwhile, it is noticeable that

,

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the percentages of Coal and Natural gas showed their reversed pattern at the beginning and the end during the given period. Looking more closely at the graph,

firstly

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, production levels of Petrol significantly increased from 90 to 100 energy units between 1981 and 1986. After that, there was a dramatic decrease a range from 140 to 100 from 1986 and 1991. But they showed an onward trend again,

as a result

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, they hit the highest record in the year 2000.

In contrast

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, manufacturing levels of Coal decreased sharply from 80 to 40 energy units between 1981 and 1986, from

then

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on, they revealed stable maintenance. They gradually fell,

Consequently

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, they recorded as the lowest with just below 40 energy units.

Whereas

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, regarding Natural gas, they recorded at 40 in 1981 and sustained consistently to 1991. But in the 1991, they showed an upward pattern. In the end, they recorded at 100 and, it isis their largest figure throughout the given period. They were the only fuel that never exhibited a downward pattern among all fuels.