The graph compares the production levels of the main kinds of fuel (coal, natural gas, and petroleum) in the UK from 1981 to 2000, measured in units.
Overall, over the period, the UK mostly produced petroleum. In addition, the figure for natural gas became the second-highest, exceeding coal in the final year.
Regarding the dominant type of fuel, petroleum experienced an overall increase. In 1981, the figure stood at around 90 units, which then went up to 140 following 4 years. After remaining unchanged there until 1987, its figure had declined to 100 units by 1991. However, it reached its the highest point of 140 units in 2000.
In terms of the remaining energy sources, coal and natural gas showed a different pattern. In 1981, coal was the second-highest energy source, at 80 units. This figure remained unchanged until 1983, but there was a sharp fall to 40 units. In contrast, it increased in 1986 to 60 units. After this, there was a steady decline, finishing at 40 units. In contrast, starting at 40 units, natural gas experienced a growth to 100 units. Therefore, in the final year, it became the second-highest figure.
