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

The quantity of

petroleum

,coal and natural

gases

prepared in the UK during the two decades from 1981 to 2000 are compared by the line graph. The amounts are denoted in energy

units

, where a single unit stands for the sum produced by a million tonnes of crude.

Overall

,

while

the demand for natural

gases

showed progress with time, that of coal witnessed a decline. Even though the usage of

petroleum

had some fluctuations it remained still within the duration.

Firstly

, when

petroleum

production is considered, it was the most popular fuel in each year, which was 90

units

in 1981. Particularly it had a rapid increase during the first three years, reaching the peak value of 140

units

which kept constant up to 1987.

Although

the

petroleum

formation rate had a gradual dip till 1992 it was raised back to its apex value.

On the other hand

, coal was the second largest power producer at the beginning which started at 80

units

.

Similarly

,

it's

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its

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constant capacity experienced a significant plunge by 50% lower than the initial amount within a year and

then

had a sudden progress up to 60

units

in the consecutive year.

Furthermore

, since 1986, coal utilization has declined slightly which reported its minimal figure in 2000 which was about 30

units

. Mean the manufacturing of natural

gases

which was the least common power tool was stabilized for the starting decade.

Accordingly

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with

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the next decade, it gradually raised the value of it, by 60

units

to the former data of 40

units

and

at the end

of 2000 natural

gases

became the second most common power generator.