The line graph provides information on the manufacturing rate of petroleum, natural gas and coal in the UK from 1981 to 2000. Overall, while petroleum and natural gas production levels saw an upward trend, the reverse was true for coal manufacturing. Petroleum supply output exhibited wild fluctuations.
The petroleum production rate started at approximately 90 energy units and this was followed by wild fluctuation rose to 140 energy units in 1996, there was no significant change, but a mild fluctuation was observed during the next four years. Starting at 80 energy units, manufactured coals dropped dramatically to 40 energy tones before seeing a moderate increase to 60 energy tones in 1986. There was a gradual decrease from 60 to 40 energy tones between 1986 and 2000.
The figure for natural gas remained stable until 1991, after which it saw a sharp increase from 40 to 80 energy tones during 1991 and 1996. Over the next four years, it steadily increased to 100 energy tones.