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.

A glance at the graph provided reveals some clear differences in the manufacturing of three primary fuels named Petroleum, coal and natural gas in the United Kingdom during the period from 1981 to 2000. Of these fuels, the highest was Petroleum

production

. Its

production

soared from approximately 85

tones

in 1981 to 140

tones

in 1986 prior to dropping to a low of just 101

tones

between 1990 and 1992.

Nonetheless

, its

production

again experienced an upward trend, culminating at 143 tonnes in 2000. Yet, by far the most significant change to take place during

this

period was the increased

production

of natural gas.

Although

its

production

was the lowest at about 39

tones

from 1981 to 1990, in 1991, it took over coal, which had the second stage in the graph and reached a peak of manufacturing more than 100

tones

of natural gas in 2000. In stark contrast,

however

, coal

production

saw a downward trend. Regardless of some fluctuations, it halved from 80

tones

in 1991 to less than 40

tones

in 2000. In general, petroleum was the vitally important fuel in the UK,

while

, coal

production

had a tendency to be blurred.