The line graph illustrates the production levels of three primary types of fuel in the United Kingdom between 1981 and 2000, quantified in tonnes.
Overall, the data reveals distinct trends in the production of petroleum, coal, and natural gas, with variations in performance across the specified period.
In terms of natural gas, production levels exhibited remarkable stability at 40 tonnes from 1981 until 1994. This stability was followed by a notable increase, culminating in a production level exceeding 80 tonnes by the year 2000. Conversely, coal production displayed a more turbulent trend, commencing at 80 tonnes in 1981. After remaining constant for the initial years, it experienced a significant decline to approximately 50 tonnes in 1985. Thereafter, a brief resurgence was observed, as production levels rebounded to around 70 tonnes in 1987. However, the overall trajectory for coal indicated a gradual decrease, plummeting to under 40 tonnes by the end of the period.
Petroleum production revealed a more volatile pattern during the same timeframe. Initially, production increased sharply from approximately 100 tonnes in 1981 to over 120 tonnes by 1983. This growth was followed by a plateau from 1983 to 1987, after which production levels fluctuated significantly, reverting to the level recorded in 1981. Following this oscillation, the production saw a slow decline, dipping below 100 tonnes by 1992. Subsequently, a resurgence occurred, with production climbing again, ultimately reaching a peak of around 110 tonnes in 2000.