The given line graph compares how much energy was produced from three different fuels in the UK from 1981 to 2000.
Overall, it is clear that petroleum production level was significantly higher than coal and natural gas for the entire period. Additionally, while petroleum and natural gas production levels increased during the period, the opposite was evident in coal production.
In 1981, the UK produced approximately 90 tonnes of petroleum, then increased significantly to 140 tonnes in 1984 before remaining stable over the next 5 years. By 1991, this figure dropped to the lowest point, reaching only 100 tonnes before experiencing a strong recovery at the end of the period. Meanwhile, natural gas tended to rise much more steadily. Up from less than 40 tonnes in the first year, natural gas surpassed coal production levels in 1991 at approximately 42 tonnes and finished at 100 tonnes.
By contrast, the UK produced less and less coal power over 20 years. Starting at 80 tonnes, coal production dropped dramatically to under 40 tonnes in 1983 before returning to 60 tonnes in 1986. Coal production levels gradually decreased over the remaining years, ending the period with 37,38 tonnes.