The given graph illustrates information regarding the production levels of the main fuels in the UK between 1981 and 2000. Units are measured in energy.
Overall, it is evident that petroleum production levels dominated throughout the given period. Meanwhile, natural gas production experienced a significant increase, whereas coal decreased.
Regarding the details, petroleum production levels started at approximately 90 million tonnes of oil in 1981, and in the next six years it showed a steady rise to 140 million, before dropping dramatically to 100 million in 1990. Then, it plummeted to nearly 140 million again in 1996and experienced a fluctuation over a 4-year period.
In terms of the other main fuels, coal figures began at 80 million in the first year and remained relatively stable until 1983 when it drastically dipped to just below 40 million. After that, it climbed to nearly 60 million in 1986 and from this period the levels gradually decreased to roughly 35 million in 2000. In contrast, natural gas started at just below 40 million in 1981 and remained stable until 1989, when it rose sharply to approximately 100 million in 2000.