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The image depicts a line graph showing energy units from 1981 to 2000, where 1 energy unit equals the energy from one million tonnes of oil; petroleum starts around 70 units in 1981, peaks near 160 units in 1985, dips to 120 units in 1991, rises to 140 units in 1996, and ends around 135 units in 2000; coal starts near 90 units in 1981, declines to 40 units in 1986, maintains until a slight rise to 50 units in 1998, and ends just below 50 units in 2000; natural gas starts around 40 units in 1981, steadily ascends to 80 units in 1990, slightly fluctuates and continues upward to 120 units in 2000.
Given the complexity of the image, the above description may not be entirely accurate.
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The line graph illustrates the levels of production of the main energy sources in the United Kingdom between 1981 and 2000.
Throughout the selected period, Petroleum has consistently remained at the highest production level above others while fluctuating in a range between 90-140 Energy Units. In respective, coal has seen a steady decline over the course of years while on the other hand, natural gas is the opposite with a steady incline in production levels.
Production levels of Petroleum have reached constant peaks of around 140 and have stayed in that range after 1996. The energy units levels of coal however had a steep decline in 1984 but recovered to 60 in 1986. Natural gas while at the beginning of the graph had the lowest production level out of the 3 main fuels in UK, has had a steady incline and surpassed coal in 1991 while reaching to a level of 100 by the year 2000.
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