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 details the

production

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of three different fossil fuels in an unspecified country between 1981 and 2000. Looking at the graph from an

overall

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perspective,

it is clear that

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the

production

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of

petroleum

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and coal followed an erratic pattern,

whereas

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natural gas stayed at the same

production

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level for most of the period. Among

three

Correct article usage

the three

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types of fuels researched,

petroleum

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always headed the list of

production

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levels. In 1981, nearly 100

tonnes

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of

petroleum

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was produced, outstripping the

production

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of coal (80

tonnes

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) and natural gas (40

tonnes

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). In 1983, the figure for

petroleum

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grew sharply by 30

tonnes

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and remained at the same level for 5 years before a pullback to around 95

tonnes

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in 1989. It

thereafter

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underwent a noticeable recovery, albeit

slight

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with slight

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fluctuations, to reach 120

tonnes

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in 2000. At the same time, coal

production

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plateaued until 1984, which was followed by a precipitous decline to 50

tonnes

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in 1985. Having jumped back to above 70

tonnes

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in 1987, the amount of coal produced still steadily dropped, hitting a low of less than 40

tonnes

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at the end

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of the period. Despite staying relatively stable at 40

tonnes

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until 1994, the figure for natural gas surged to 85

tonnes

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in 2000.