The graph illustrates the level of production of three main kinds of fuels in the United Kingdom from 1981 to 2000.
As can be seen from the graph, the production level of petroleum reached a peak at 140 energy units in 2000, while the level of natural gas hit a low at around 40 energy units in 1981.
The period from 1981 to 1991 saw a slight increase by over 10 units of the production level of petroleum. Similarity, there was a remarkable rise at 50 energy units at the same period. Especially, the production of levels of petroleum reached the highest feature at around 140 energy units. There was a contrasting movement in the level of coal with two other fuels. The production level of coal climbed significantly from 80 energy units to 50 energy units.
There was also a contrasting movement in the production levels of petroleum, natural gas and coal. Whereas the level of production of petroleum and natural gas growth remarkably, the level of coal hit a lowest point after 9 years. Between 1991 and 2000, the level of petroleum and natural gas bloomed at around 40 energy units, and 50 energy units respectively. At the same time, the production levels of coal hit a low at 30 energy units.
