The given chart illustrates the amount of the main category of fuel which was produced in the UK during the period of 19 years starting in 1981.
As can be seen from the chart, the volume of petroleum produced was the highest. Additionally, despite some fluctuation, the creation levels of natural gags and petroleum saw an upward trend, whereas this was opposite to that of coal.
It is notable that starting in 1981, the figure for petroleum which was produced covered 10 tons higher than that of coal at 80 tons, compared with 38 tons for natural gas. Furthermore, there was significant increase to 14 tons in the amount of petroleum created in 1986. By contrast, the production volume of coal decreased significantly to 37 tons in 1984, and the increased slightly to 6o tons in 1986.
Regarding 1991, the figure for petroleum which was manufactured saw a significant growth to 100 tons. Moreover, there was a considerable rise to 100 tons in the levels of natural gas in 2020. In addition, the amount of petroleum witnessed an upward trend and reached a peak of 142 tons in the same period. By contrast, the volume of coal declined significantly and hit the lowest point of 38 tons in 2000.