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 graph depicts the volume production of three main fuels on an energy unit scale in the UK in an approximate length of 20 years from 1981 to 2000.

Overall

, it is clearly observed that petroleum remained the dominant choice of energy,

although

fluctuated and reached its lowest use some years but

then

rocketed to reach its pick.

Whereas

coal decreased gradually over time

whereas

natural gas usage surged remarkably.

To begin

with, the most fundamental fuel was petroleum with nearly 90

units

in 1981 which

then

reached 140

units

in 1984, remained steady and fell to up to 100

units

again from 1986 to 1991, the time when found its way to rise and had the highest share, more than 140

units

by 2000.

In addition

, Natural gas resources did not alter over a decade from 1981 to 1991,

then

a significant surge occurred to increase its share from 40 to 100 by the end of 2000.

On the other hand

, Coal started with 80

units

in 1981, which was the second fuel priority, but after a

while

everything changed and led to it dropping dramatically to less than 40

units

in 1984.

Nonetheless

, coal usage increased to 60

units

but

overall

decreased from 1986 to 2000, when reached approximately 30

units

.